Lucene search
+L

CVE-2026-20236 Multiple Cisco Products Snort 3 Software Hardening Release: October 2026

🗓️ 21 Oct 2026 16:12:58Reported by ciscoType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Software hardening in Snort 3 addresses multiple vulnerabilities involving incorrect calculation.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-20236
21 Oct 202617:03
–circl
cisco
Cisco
Cisco Advance Notification for Publication of October 21, 2026, Security Advisories
14 Oct 202616:00
–cisco
cve
CVE
CVE-2026-20236
21 Oct 202616:12
–cve
euvd
EUVD
EUVD-2026-107379
21 Oct 202616:12
–euvd
nvd
NVD
CVE-2026-20236
21 Oct 202617:18
–nvd
[
  {
    "vendor": "Cisco",
    "product": "Cisco Cyber Vision",
    "versions": [
      {
        "version": "3.0.0",
        "status": "affected"
      },
      {
        "version": "3.0.2",
        "status": "affected"
      },
      {
        "version": "3.0.3",
        "status": "affected"
      },
      {
        "version": "3.0.1",
        "status": "affected"
      },
      {
        "version": "3.1.0",
        "status": "affected"
      },
      {
        "version": "3.0.4",
        "status": "affected"
      },
      {
        "version": "3.1.1",
        "status": "affected"
      },
      {
        "version": "3.1.2",
        "status": "affected"
      },
      {
        "version": "3.2.0",
        "status": "affected"
      },
      {
        "version": "3.0.5",
        "status": "affected"
      },
      {
        "version": "3.2.1",
        "status": "affected"
      },
      {
        "version": "3.0.6",
        "status": "affected"
      },
      {
        "version": "3.2.2",
        "status": "affected"
      },
      {
        "version": "3.2.3",
        "status": "affected"
      },
      {
        "version": "3.2.4",
        "status": "affected"
      },
      {
        "version": "4.0.0",
        "status": "affected"
      },
      {
        "version": "4.0.1",
        "status": "affected"
      },
      {
        "version": "4.0.2",
        "status": "affected"
      },
      {
        "version": "4.0.3",
        "status": "affected"
      },
      {
        "version": "4.1.0",
        "status": "affected"
      },
      {
        "version": "4.1.1",
        "status": "affected"
      },
      {
        "version": "4.1.2",
        "status": "affected"
      },
      {
        "version": "4.1.3",
        "status": "affected"
      },
      {
        "version": "4.1.4",
        "status": "affected"
      },
      {
        "version": "4.2.0",
        "status": "affected"
      },
      {
        "version": "4.2.1",
        "status": "affected"
      },
      {
        "version": "4.1.5",
        "status": "affected"
      },
      {
        "version": "4.2.2",
        "status": "affected"
      },
      {
        "version": "4.2.X",
        "status": "affected"
      },
      {
        "version": "4.2.3",
        "status": "affected"
      },
      {
        "version": "4.2.4",
        "status": "affected"
      },
      {
        "version": "4.2.6",
        "status": "affected"
      },
      {
        "version": "4.1.6",
        "status": "affected"
      },
      {
        "version": "4.3.0",
        "status": "affected"
      },
      {
        "version": "4.3.1",
        "status": "affected"
      },
      {
        "version": "4.3.2",
        "status": "affected"
      },
      {
        "version": "4.3.3",
        "status": "affected"
      },
      {
        "version": "4.4.0",
        "status": "affected"
      },
      {
        "version": "4.4.1",
        "status": "affected"
      },
      {
        "version": "4.4.2",
        "status": "affected"
      },
      {
        "version": "4.4.3",
        "status": "affected"
      },
      {
        "version": "4.1.7",
        "status": "affected"
      },
      {
        "version": "5.0.0",
        "status": "affected"
      },
      {
        "version": "5.0.1",
        "status": "affected"
      },
      {
        "version": "5.0.2",
        "status": "affected"
      },
      {
        "version": "5.1.0",
        "status": "affected"
      },
      {
        "version": "5.1.1",
        "status": "affected"
      },
      {
        "version": "5.1.2",
        "status": "affected"
      },
      {
        "version": "5.1.3",
        "status": "affected"
      },
      {
        "version": "5.2.0",
        "status": "affected"
      },
      {
        "version": "5.2.1",
        "status": "affected"
      },
      {
        "version": "5.3.0",
        "status": "affected"
      },
      {
        "version": "5.3.1",
        "status": "affected"
      },
      {
        "version": "5.3.2",
        "status": "affected"
      },
      {
        "version": "5.3.3",
        "status": "affected"
      },
      {
        "version": "5.5.1",
        "status": "affected"
      },
      {
        "version": "5.6.1",
        "status": "affected"
      },
      {
        "version": "5.4.0",
        "status": "affected"
      },
      {
        "version": "5.4.1",
        "status": "affected"
      },
      {
        "version": "5.4.2",
        "status": "affected"
      },
      {
        "version": "5.7.0",
        "status": "affected"
      },
      {
        "version": "5.8.1",
        "status": "affected"
      },
      {
        "version": "5.7.1",
        "status": "affected"
      },
      {
        "version": "5.8.0",
        "status": "affected"
      },
      {
        "version": "5.5.2",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Cisco",
    "product": "Cisco Open Source Snort3",
    "versions": [
      {
        "version": "3.12.2.0",
        "status": "affected"
      },
      {
        "version": "3.1.2.0",
        "status": "affected"
      },
      {
        "version": "3.1.3.0",
        "status": "affected"
      },
      {
        "version": "3.1.4.0",
        "status": "affected"
      },
      {
        "version": "3.1.5.0",
        "status": "affected"
      },
      {
        "version": "3.1.6.0",
        "status": "affected"
      },
      {
        "version": "3.1.7.0",
        "status": "affected"
      },
      {
        "version": "3.1.8.0",
        "status": "affected"
      },
      {
        "version": "3.1.9.0",
        "status": "affected"
      },
      {
        "version": "3.1.10.0",
        "status": "affected"
      },
      {
        "version": "3.1.12.0",
        "status": "affected"
      },
      {
        "version": "3.1.13.0",
        "status": "affected"
      },
      {
        "version": "3.1.14.0",
        "status": "affected"
      },
      {
        "version": "3.1.15.0",
        "status": "affected"
      },
      {
        "version": "3.1.16.0",
        "status": "affected"
      },
      {
        "version": "3.1.17.0",
        "status": "affected"
      },
      {
        "version": "3.1.18.0",
        "status": "affected"
      },
      {
        "version": "3.1.19.0",
        "status": "affected"
      },
      {
        "version": "3.1.20.0",
        "status": "affected"
      },
      {
        "version": "3.1.21.0",
        "status": "affected"
      },
      {
        "version": "3.1.22.0",
        "status": "affected"
      },
      {
        "version": "3.1.23.0",
        "status": "affected"
      },
      {
        "version": "3.1.24.0",
        "status": "affected"
      },
      {
        "version": "3.1.25.0",
        "status": "affected"
      },
      {
        "version": "3.1.27.0",
        "status": "affected"
      },
      {
        "version": "3.1.28.0",
        "status": "affected"
      },
      {
        "version": "3.1.29.0",
        "status": "affected"
      },
      {
        "version": "3.1.30.0",
        "status": "affected"
      },
      {
        "version": "3.1.31.0",
        "status": "affected"
      },
      {
        "version": "3.1.32.0",
        "status": "affected"
      },
      {
        "version": "3.1.36.0",
        "status": "affected"
      },
      {
        "version": "3.1.38.0",
        "status": "affected"
      },
      {
        "version": "3.1.39.0",
        "status": "affected"
      },
      {
        "version": "3.1.40.0",
        "status": "affected"
      },
      {
        "version": "3.1.41.0",
        "status": "affected"
      },
      {
        "version": "3.1.42.0",
        "status": "affected"
      },
      {
        "version": "3.1.43.0",
        "status": "affected"
      },
      {
        "version": "3.1.45.0",
        "status": "affected"
      },
      {
        "version": "3.1.47.0",
        "status": "affected"
      },
      {
        "version": "3.1.48.0",
        "status": "affected"
      },
      {
        "version": "3.1.50.0",
        "status": "affected"
      },
      {
        "version": "3.1.51.0",
        "status": "affected"
      },
      {
        "version": "3.1.52.0",
        "status": "affected"
      },
      {
        "version": "3.1.53.0",
        "status": "affected"
      },
      {
        "version": "3.1.55.0",
        "status": "affected"
      },
      {
        "version": "3.1.56.0",
        "status": "affected"
      },
      {
        "version": "3.1.57.0",
        "status": "affected"
      },
      {
        "version": "3.1.58.0",
        "status": "affected"
      },
      {
        "version": "3.1.59.0",
        "status": "affected"
      },
      {
        "version": "3.1.60.0",
        "status": "affected"
      },
      {
        "version": "3.1.61.0",
        "status": "affected"
      },
      {
        "version": "3.1.62.0",
        "status": "affected"
      },
      {
        "version": "3.1.63.0",
        "status": "affected"
      },
      {
        "version": "3.1.64.0",
        "status": "affected"
      },
      {
        "version": "3.1.65.0",
        "status": "affected"
      },
      {
        "version": "3.1.66.0",
        "status": "affected"
      },
      {
        "version": "3.1.67.0",
        "status": "affected"
      },
      {
        "version": "3.1.69.0",
        "status": "affected"
      },
      {
        "version": "3.1.70.0",
        "status": "affected"
      },
      {
        "version": "3.1.71.0",
        "status": "affected"
      },
      {
        "version": "3.1.72.0",
        "status": "affected"
      },
      {
        "version": "3.1.73.0",
        "status": "affected"
      },
      {
        "version": "3.1.74.0",
        "status": "affected"
      },
      {
        "version": "3.1.75.0",
        "status": "affected"
      },
      {
        "version": "3.1.76.0",
        "status": "affected"
      },
      {
        "version": "3.1.77.0",
        "status": "affected"
      },
      {
        "version": "3.1.78.0",
        "status": "affected"
      },
      {
        "version": "3.1.81.0",
        "status": "affected"
      },
      {
        "version": "3.1.82.0",
        "status": "affected"
      },
      {
        "version": "3.1.83.0",
        "status": "affected"
      },
      {
        "version": "3.1.84.0",
        "status": "affected"
      },
      {
        "version": "3.2.1.0",
        "status": "affected"
      },
      {
        "version": "3.2.2.0",
        "status": "affected"
      },
      {
        "version": "3.3.0.0",
        "status": "affected"
      },
      {
        "version": "3.3.1.0",
        "status": "affected"
      },
      {
        "version": "3.3.2.0",
        "status": "affected"
      },
      {
        "version": "3.3.3.0",
        "status": "affected"
      },
      {
        "version": "3.3.4.0",
        "status": "affected"
      },
      {
        "version": "3.3.5.0",
        "status": "affected"
      },
      {
        "version": "3.3.7.0",
        "status": "affected"
      },
      {
        "version": "3.5.0.0",
        "status": "affected"
      },
      {
        "version": "3.5.1.0",
        "status": "affected"
      },
      {
        "version": "3.8.1.0",
        "status": "affected"
      },
      {
        "version": "3.6.0.0",
        "status": "affected"
      },
      {
        "version": "3.6.2.0",
        "status": "affected"
      },
      {
        "version": "3.9.3.0",
        "status": "affected"
      },
      {
        "version": "3.7.2.0",
        "status": "affected"
      },
      {
        "version": "3.7.0.0",
        "status": "affected"
      },
      {
        "version": "3.9.6.0",
        "status": "affected"
      },
      {
        "version": "3.10.0.0",
        "status": "affected"
      },
      {
        "version": "3.10.2.0",
        "status": "affected"
      },
      {
        "version": "3.7.4.0",
        "status": "affected"
      },
      {
        "version": "3.9.0.0",
        "status": "affected"
      },
      {
        "version": "3.5.2.0",
        "status": "affected"
      },
      {
        "version": "3.12.1.0",
        "status": "affected"
      },
      {
        "version": "3.6.1.0",
        "status": "affected"
      },
      {
        "version": "3.9.2.0",
        "status": "affected"
      },
      {
        "version": "3.6.3.0",
        "status": "affected"
      },
      {
        "version": "3.9.5.0",
        "status": "affected"
      },
      {
        "version": "3.7.1.0",
        "status": "affected"
      },
      {
        "version": "3.9.7.0",
        "status": "affected"
      },
      {
        "version": "3.7.3.0",
        "status": "affected"
      },
      {
        "version": "3.10.1.0",
        "status": "affected"
      },
      {
        "version": "3.9.1.0",
        "status": "affected"
      },
      {
        "version": "3.11.1.0",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Cisco",
    "product": "Cisco Secure Firewall Threat Defense (FTD) Software",
    "versions": [
      {
        "version": "7.0.0",
        "status": "affected"
      },
      {
        "version": "7.0.0.1",
        "status": "affected"
      },
      {
        "version": "7.0.1",
        "status": "affected"
      },
      {
        "version": "7.0.1.1",
        "status": "affected"
      },
      {
        "version": "7.0.2",
        "status": "affected"
      },
      {
        "version": "7.2.0",
        "status": "affected"
      },
      {
        "version": "7.0.2.1",
        "status": "affected"
      },
      {
        "version": "7.0.3",
        "status": "affected"
      },
      {
        "version": "7.2.0.1",
        "status": "affected"
      },
      {
        "version": "7.0.4",
        "status": "affected"
      },
      {
        "version": "7.2.1",
        "status": "affected"
      },
      {
        "version": "7.0.5",
        "status": "affected"
      },
      {
        "version": "7.3.0",
        "status": "affected"
      },
      {
        "version": "7.2.2",
        "status": "affected"
      },
      {
        "version": "7.2.3",
        "status": "affected"
      },
      {
        "version": "7.3.1",
        "status": "affected"
      },
      {
        "version": "7.2.4",
        "status": "affected"
      },
      {
        "version": "7.0.6",
        "status": "affected"
      },
      {
        "version": "7.2.5",
        "status": "affected"
      },
      {
        "version": "7.2.4.1",
        "status": "affected"
      },
      {
        "version": "7.3.1.1",
        "status": "affected"
      },
      {
        "version": "7.4.0",
        "status": "affected"
      },
      {
        "version": "7.0.6.1",
        "status": "affected"
      },
      {
        "version": "7.2.5.1",
        "status": "affected"
      },
      {
        "version": "7.4.1",
        "status": "affected"
      },
      {
        "version": "7.2.6",
        "status": "affected"
      },
      {
        "version": "7.0.6.2",
        "status": "affected"
      },
      {
        "version": "7.4.1.1",
        "status": "affected"
      },
      {
        "version": "7.2.7",
        "status": "affected"
      },
      {
        "version": "7.2.5.2",
        "status": "affected"
      },
      {
        "version": "7.3.1.2",
        "status": "affected"
      },
      {
        "version": "7.2.8",
        "status": "affected"
      },
      {
        "version": "7.6.0",
        "status": "affected"
      },
      {
        "version": "7.4.2",
        "status": "affected"
      },
      {
        "version": "7.2.8.1",
        "status": "affected"
      },
      {
        "version": "7.0.6.3",
        "status": "affected"
      },
      {
        "version": "7.4.2.1",
        "status": "affected"
      },
      {
        "version": "7.2.9",
        "status": "affected"
      },
      {
        "version": "7.0.7",
        "status": "affected"
      },
      {
        "version": "7.7.0",
        "status": "affected"
      },
      {
        "version": "7.4.2.2",
        "status": "affected"
      },
      {
        "version": "7.2.10",
        "status": "affected"
      },
      {
        "version": "7.6.1",
        "status": "affected"
      },
      {
        "version": "7.4.2.3",
        "status": "affected"
      },
      {
        "version": "7.0.8",
        "status": "affected"
      },
      {
        "version": "7.6.2",
        "status": "affected"
      },
      {
        "version": "7.7.10",
        "status": "affected"
      },
      {
        "version": "7.7.11",
        "status": "affected"
      },
      {
        "version": "7.0.8.1",
        "status": "affected"
      },
      {
        "version": "7.6.2.1",
        "status": "affected"
      },
      {
        "version": "7.7.10.1",
        "status": "affected"
      },
      {
        "version": "7.4.2.4",
        "status": "affected"
      },
      {
        "version": "7.2.10.2",
        "status": "affected"
      },
      {
        "version": "7.4.3",
        "status": "affected"
      },
      {
        "version": "7.6.4",
        "status": "affected"
      },
      {
        "version": "10.0.0",
        "status": "affected"
      },
      {
        "version": "7.4.4",
        "status": "affected"
      },
      {
        "version": "7.0.9",
        "status": "affected"
      },
      {
        "version": "7.2.11",
        "status": "affected"
      },
      {
        "version": "7.4.7",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Cisco",
    "product": "Cisco UTD SNORT IPS Engine Software",
    "versions": [
      {
        "version": "17.12.1a",
        "status": "affected"
      },
      {
        "version": "17.12.2",
        "status": "affected"
      },
      {
        "version": "17.13.1a",
        "status": "affected"
      },
      {
        "version": "17.12.3",
        "status": "affected"
      },
      {
        "version": "17.14.1a",
        "status": "affected"
      },
      {
        "version": "17.12.4",
        "status": "affected"
      },
      {
        "version": "17.12.3a",
        "status": "affected"
      },
      {
        "version": "17.15.1a",
        "status": "affected"
      },
      {
        "version": "17.16.1a",
        "status": "affected"
      },
      {
        "version": "17.12.4a",
        "status": "affected"
      },
      {
        "version": "17.15.2c",
        "status": "affected"
      },
      {
        "version": "17.12.4b",
        "status": "affected"
      },
      {
        "version": "17.15.2a",
        "status": "affected"
      },
      {
        "version": "17.12.5",
        "status": "affected"
      },
      {
        "version": "17.17.1",
        "status": "affected"
      },
      {
        "version": "17.12.5a",
        "status": "affected"
      },
      {
        "version": "17.15.3a",
        "status": "affected"
      },
      {
        "version": "17.15.3",
        "status": "affected"
      },
      {
        "version": "17.12.5b",
        "status": "affected"
      },
      {
        "version": "17.12.5c",
        "status": "affected"
      },
      {
        "version": "17.15.4",
        "status": "affected"
      },
      {
        "version": "17.18.1",
        "status": "affected"
      },
      {
        "version": "17.18.1a",
        "status": "affected"
      },
      {
        "version": "17.12.6",
        "status": "affected"
      },
      {
        "version": "17.15.4c",
        "status": "affected"
      },
      {
        "version": "17.12.5d",
        "status": "affected"
      },
      {
        "version": "17.18.2",
        "status": "affected"
      },
      {
        "version": "26.1.1",
        "status": "affected"
      },
      {
        "version": "17.15.5",
        "status": "affected"
      },
      {
        "version": "17.15.5a",
        "status": "affected"
      },
      {
        "version": "17.12.7",
        "status": "affected"
      },
      {
        "version": "17.12.7a",
        "status": "affected"
      },
      {
        "version": "17.12.7b",
        "status": "affected"
      },
      {
        "version": "17.18.3a",
        "status": "affected"
      },
      {
        "version": "17.12.8",
        "status": "affected"
      },
      {
        "version": "17.15.6",
        "status": "affected"
      },
      {
        "version": "17.18.4",
        "status": "affected"
      },
      {
        "version": "26.1.2",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  }
]

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

21 Oct 2026 16:12Current
CVSS 3.17.5
3