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CVE-2026-20277

🗓️ 02 Sep 2026 16:13:11Reported by ciscoType 
cve
 cve
🔗 web.nvd.nist.gov👁 4 Views

Protection mechanism failure in Cisco IOS XR Software addressed in September 2026 hardening release.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-20277 Cisco IOS XR Software Security Hardening Release: September 2026
2 Sep 202616:13
cvelist
euvd
EUVD
EUVD-2026-70202
2 Sep 202616:13
euvd
nvd
NVD
CVE-2026-20277
2 Sep 202617:17
nvd
Vulners
Node
OR
[
  {
    "vendor": "Cisco",
    "product": "Cisco IOS XR Software",
    "versions": [
      {
        "version": "6.5.29",
        "status": "affected"
      },
      {
        "version": "7.0.1",
        "status": "affected"
      },
      {
        "version": "6.5.26",
        "status": "affected"
      },
      {
        "version": "6.5.25",
        "status": "affected"
      },
      {
        "version": "6.5.28",
        "status": "affected"
      },
      {
        "version": "6.5.90",
        "status": "affected"
      },
      {
        "version": "7.1.1",
        "status": "affected"
      },
      {
        "version": "7.0.90",
        "status": "affected"
      },
      {
        "version": "6.7.1",
        "status": "affected"
      },
      {
        "version": "7.0.2",
        "status": "affected"
      },
      {
        "version": "7.1.15",
        "status": "affected"
      },
      {
        "version": "7.2.1",
        "status": "affected"
      },
      {
        "version": "7.1.2",
        "status": "affected"
      },
      {
        "version": "6.7.2",
        "status": "affected"
      },
      {
        "version": "7.0.11",
        "status": "affected"
      },
      {
        "version": "7.0.12",
        "status": "affected"
      },
      {
        "version": "7.0.14",
        "status": "affected"
      },
      {
        "version": "7.1.25",
        "status": "affected"
      },
      {
        "version": "7.2.12",
        "status": "affected"
      },
      {
        "version": "7.3.1",
        "status": "affected"
      },
      {
        "version": "7.1.3",
        "status": "affected"
      },
      {
        "version": "6.7.3",
        "status": "affected"
      },
      {
        "version": "7.4.1",
        "status": "affected"
      },
      {
        "version": "7.2.2",
        "status": "affected"
      },
      {
        "version": "6.7.4",
        "status": "affected"
      },
      {
        "version": "6.5.31",
        "status": "affected"
      },
      {
        "version": "7.3.15",
        "status": "affected"
      },
      {
        "version": "7.3.16",
        "status": "affected"
      },
      {
        "version": "6.8.1",
        "status": "affected"
      },
      {
        "version": "7.4.15",
        "status": "affected"
      },
      {
        "version": "6.5.32",
        "status": "affected"
      },
      {
        "version": "7.3.2",
        "status": "affected"
      },
      {
        "version": "7.5.1",
        "status": "affected"
      },
      {
        "version": "7.4.16",
        "status": "affected"
      },
      {
        "version": "7.3.27",
        "status": "affected"
      },
      {
        "version": "7.6.1",
        "status": "affected"
      },
      {
        "version": "7.5.2",
        "status": "affected"
      },
      {
        "version": "7.8.1",
        "status": "affected"
      },
      {
        "version": "7.6.15",
        "status": "affected"
      },
      {
        "version": "7.5.12",
        "status": "affected"
      },
      {
        "version": "7.8.12",
        "status": "affected"
      },
      {
        "version": "7.3.3",
        "status": "affected"
      },
      {
        "version": "7.7.1",
        "status": "affected"
      },
      {
        "version": "6.8.2",
        "status": "affected"
      },
      {
        "version": "7.3.4",
        "status": "affected"
      },
      {
        "version": "7.4.2",
        "status": "affected"
      },
      {
        "version": "6.7.35",
        "status": "affected"
      },
      {
        "version": "6.9.1",
        "status": "affected"
      },
      {
        "version": "7.6.2",
        "status": "affected"
      },
      {
        "version": "7.5.3",
        "status": "affected"
      },
      {
        "version": "7.7.2",
        "status": "affected"
      },
      {
        "version": "6.9.2",
        "status": "affected"
      },
      {
        "version": "7.9.1",
        "status": "affected"
      },
      {
        "version": "7.10.1",
        "status": "affected"
      },
      {
        "version": "7.8.2",
        "status": "affected"
      },
      {
        "version": "7.5.4",
        "status": "affected"
      },
      {
        "version": "6.5.33",
        "status": "affected"
      },
      {
        "version": "7.8.22",
        "status": "affected"
      },
      {
        "version": "7.7.21",
        "status": "affected"
      },
      {
        "version": "7.9.2",
        "status": "affected"
      },
      {
        "version": "7.3.5",
        "status": "affected"
      },
      {
        "version": "7.5.5",
        "status": "affected"
      },
      {
        "version": "7.11.1",
        "status": "affected"
      },
      {
        "version": "7.9.21",
        "status": "affected"
      },
      {
        "version": "7.10.2",
        "status": "affected"
      },
      {
        "version": "24.1.1",
        "status": "affected"
      },
      {
        "version": "7.6.3",
        "status": "affected"
      },
      {
        "version": "7.3.6",
        "status": "affected"
      },
      {
        "version": "7.5.52",
        "status": "affected"
      },
      {
        "version": "7.11.2",
        "status": "affected"
      },
      {
        "version": "24.2.1",
        "status": "affected"
      },
      {
        "version": "24.1.2",
        "status": "affected"
      },
      {
        "version": "24.2.11",
        "status": "affected"
      },
      {
        "version": "24.3.1",
        "status": "affected"
      },
      {
        "version": "24.4.1",
        "status": "affected"
      },
      {
        "version": "24.2.2",
        "status": "affected"
      },
      {
        "version": "7.8.23",
        "status": "affected"
      },
      {
        "version": "7.11.21",
        "status": "affected"
      },
      {
        "version": "24.2.20",
        "status": "affected"
      },
      {
        "version": "24.3.2",
        "status": "affected"
      },
      {
        "version": "24.4.10",
        "status": "affected"
      },
      {
        "version": "6.5.35",
        "status": "affected"
      },
      {
        "version": "25.1.1",
        "status": "affected"
      },
      {
        "version": "24.4.2",
        "status": "affected"
      },
      {
        "version": "24.3.20",
        "status": "affected"
      },
      {
        "version": "24.4.15",
        "status": "affected"
      },
      {
        "version": "25.2.1",
        "status": "affected"
      },
      {
        "version": "6.5.351",
        "status": "affected"
      },
      {
        "version": "25.1.2",
        "status": "affected"
      },
      {
        "version": "24.3.30",
        "status": "affected"
      },
      {
        "version": "25.3.1",
        "status": "affected"
      },
      {
        "version": "6.5.352",
        "status": "affected"
      },
      {
        "version": "24.4.30",
        "status": "affected"
      },
      {
        "version": "24.2.21",
        "status": "affected"
      },
      {
        "version": "25.4.1",
        "status": "affected"
      },
      {
        "version": "25.2.2",
        "status": "affected"
      },
      {
        "version": "25.2.15",
        "status": "affected"
      },
      {
        "version": "7.2.0",
        "status": "affected"
      },
      {
        "version": "7.0.0",
        "status": "affected"
      },
      {
        "version": "25.2.30",
        "status": "affected"
      },
      {
        "version": "6.5.353",
        "status": "affected"
      },
      {
        "version": "26.1.1",
        "status": "affected"
      },
      {
        "version": "25.1.30",
        "status": "affected"
      },
      {
        "version": "25.3.15",
        "status": "affected"
      },
      {
        "version": "26.2.100",
        "status": "affected"
      },
      {
        "version": "25.4.2",
        "status": "affected"
      },
      {
        "version": "26.2.1",
        "status": "affected"
      },
      {
        "version": "25.4.30",
        "status": "affected"
      },
      {
        "version": "26.1.2",
        "status": "affected"
      },
      {
        "version": "25.4.201",
        "status": "affected"
      },
      {
        "version": "26.2.101",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  }
]

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