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CVE-2026-99072VulnerabilityPublished Updated

Microsoft · ipv4: stop route notification sizing when nexthop group shrinks

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99072· Medium

Not known to be exploited · fixed in d3daa33c7af92e38f2274bbd2576f58bfbaf89e6 : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:18 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in d3daa33c7af92e38f2274bbd2576f58bfbaf89e6, c1f48d1c2d5e9efd904dbbc2f2b3d41543e55c49, ad2b3a68b8a7d5d27de88e05674e4adb1ce46d88 +4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Oct 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
  • ≥ 680aea08e78c003292415518ad270bc20f9c80b1, < d3daa33c7af92e38f2274bbd2576f58bfbaf89e6
Fixed in
  • d3daa33c7af92e38f2274bbd2576f58bfbaf89e6
LinuxLinuxAffected
  • ≥ 680aea08e78c003292415518ad270bc20f9c80b1, < c1f48d1c2d5e9efd904dbbc2f2b3d41543e55c49
Fixed in
  • c1f48d1c2d5e9efd904dbbc2f2b3d41543e55c49
LinuxLinuxAffected
  • ≥ 680aea08e78c003292415518ad270bc20f9c80b1, < ad2b3a68b8a7d5d27de88e05674e4adb1ce46d88
Fixed in
  • ad2b3a68b8a7d5d27de88e05674e4adb1ce46d88
LinuxLinuxAffected
  • ≥ 680aea08e78c003292415518ad270bc20f9c80b1, < ad1c9f1b98c92609e9bb2ae8f05916defc3b0a54
Fixed in
  • ad1c9f1b98c92609e9bb2ae8f05916defc3b0a54
LinuxLinuxAffected
  • ≥ 680aea08e78c003292415518ad270bc20f9c80b1, < 96f3fbb8575593657c7e80786dc3251d2fe3931b
Fixed in
  • 96f3fbb8575593657c7e80786dc3251d2fe3931b
LinuxLinuxAffected
  • ≥ 680aea08e78c003292415518ad270bc20f9c80b1, < 81f0deb02a5b5477f236bbbaed1149b779a8632b
Fixed in
  • 81f0deb02a5b5477f236bbbaed1149b779a8632b

Description

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

References

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