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CVE-2026-80996VulnerabilityPublished Updated

Microsoft · net: l2tp: do not propagate multicast notification errors

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-80996· Low

Not known to be exploited · fixed in af20e269f7459d2ce69887fdf2fad7caf986c865 : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:19 UTC

Severity
Low

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in af20e269f7459d2ce69887fdf2fad7caf986c865, 73761c3cfb6d86392d63335d10f464b9d43275a7, 50c4038f1670bf9a80c6a58ae83d1602decd8481 +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b, < af20e269f7459d2ce69887fdf2fad7caf986c865
Fixed in
  • af20e269f7459d2ce69887fdf2fad7caf986c865
LinuxLinuxAffected
  • ≥ 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b, < 73761c3cfb6d86392d63335d10f464b9d43275a7
Fixed in
  • 73761c3cfb6d86392d63335d10f464b9d43275a7
LinuxLinuxAffected
  • ≥ 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b, < 50c4038f1670bf9a80c6a58ae83d1602decd8481
Fixed in
  • 50c4038f1670bf9a80c6a58ae83d1602decd8481
LinuxLinuxAffected
  • ≥ 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b, < 9c340473f4822bb31b151c19afd17448eda5acd1
Fixed in
  • 9c340473f4822bb31b151c19afd17448eda5acd1
LinuxLinuxAffected
  • ≥ 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b, < 7efe1c31e0903a5aa796feb96d3adab574b7ff41
Fixed in
  • 7efe1c31e0903a5aa796feb96d3adab574b7ff41
LinuxLinuxAffected
  • ≥ 33f72e6f0c67f673fd0c63a8182dbd9ffb8cf50b, < 0fe037d5eaad938aa3e9143ee071aa237750b42b
Fixed in
  • 0fe037d5eaad938aa3e9143ee071aa237750b42b

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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