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CVE-2026-21917

🗓️ 15 Jan 2026 20:27:11Reported by juniperType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 7 Views

Unauthenticated attacker can cause DoS on Junos SRX via malformed secure sockets layer packet in UTM Web-Filtering.

Related
Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-21917
15 Jan 202620:27
attackerkb
Circl
CVE-2026-21917
15 Jan 202621:39
circl
CNNVD
Juniper Networks Junos OS security vulnerabilities
15 Jan 202600:00
cnnvd
Cvelist
CVE-2026-21917 Junos OS: SRX Series: Specifically malformed SSL packet causes FPC crash
15 Jan 202620:27
cvelist
EUVD
EUVD-2026-2689
15 Jan 202620:27
euvd
NCSC
Vulnerabilities fixed in Juniper Networks JunOS
16 Jan 202610:07
ncsc
NVD
CVE-2026-21917
15 Jan 202621:16
nvd
OSV
CVE-2026-21917
15 Jan 202621:16
osv
Positive Technologies
PT-2026-3129
15 Jan 202600:00
ptsecurity
RedhatCVE
CVE-2026-21917
16 Jan 202621:33
redhatcve
Rows per page
NVD
Vulners
Node
juniperjunosMatch23.2r2-s2
OR
juniperjunosMatch23.2r2-s3
OR
juniperjunosMatch23.2r2-s4
OR
juniperjunosMatch23.4r2-s1
OR
juniperjunosMatch23.4r2-s2
OR
juniperjunosMatch23.4r2-s3
OR
juniperjunosMatch23.4r2-s4
OR
juniperjunosMatch24.2-
OR
juniperjunosMatch24.2r1
OR
juniperjunosMatch24.2r1-s1
OR
juniperjunosMatch24.2r1-s2
OR
juniperjunosMatch24.2r2
OR
juniperjunosMatch24.2r2-s1
OR
juniperjunosMatch24.4-
OR
juniperjunosMatch24.4r1
OR
juniperjunosMatch24.4r1-s2
OR
juniperjunosMatch24.4r2
AND
[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "SRX Series"
    ],
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.2R2-S5",
        "status": "affected",
        "version": "23.2R2-S2",
        "versionType": "semver"
      },
      {
        "lessThan": "23.4R2-S5",
        "status": "affected",
        "version": "23.4R2-S1",
        "versionType": "semver"
      },
      {
        "lessThan": "24.2R2-S2",
        "status": "affected",
        "version": "24.2",
        "versionType": "semver"
      },
      {
        "lessThan": "24.4R1-S3, 24.4R2",
        "status": "affected",
        "version": "24.4",
        "versionType": "semver"
      }
    ]
  }
]

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23 Jan 2026 19:41Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.17.5
CVSS 48.7
EPSS0.00042
SSVC
7