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CVE-2026-89531VulnerabilityPublished Updated

Microsoft · svcrdma: Reject connection when transport allocation fails

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-89531· Medium

Not known to be exploited · fixed in 0944462247dcb7de7622cdaaadf5f05c52707dab : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:19 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 0944462247dcb7de7622cdaaadf5f05c52707dab, 387401ebe7f4897acd18321dc94817ad6a33f580, 6e21754bbf75075f3fee1cebc79f3417364235ec +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
  • ≥ 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 0944462247dcb7de7622cdaaadf5f05c52707dab
Fixed in
  • 0944462247dcb7de7622cdaaadf5f05c52707dab
LinuxLinuxAffected
  • ≥ 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 387401ebe7f4897acd18321dc94817ad6a33f580
Fixed in
  • 387401ebe7f4897acd18321dc94817ad6a33f580
LinuxLinuxAffected
  • ≥ 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 6e21754bbf75075f3fee1cebc79f3417364235ec
Fixed in
  • 6e21754bbf75075f3fee1cebc79f3417364235ec
LinuxLinuxAffected
  • ≥ 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 5bf47bbea3c22c0af2293b6c393ab04d5420f7ab
Fixed in
  • 5bf47bbea3c22c0af2293b6c393ab04d5420f7ab
LinuxLinuxAffected
  • ≥ 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 3cf372cec7ab2cd8c6002bf775cc14d90ccb098b
Fixed in
  • 3cf372cec7ab2cd8c6002bf775cc14d90ccb098b
LinuxLinuxAffected
  • ≥ 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 1f6a14c142fee4778c32709d1d54595c2e2b7991
Fixed in
  • 1f6a14c142fee4778c32709d1d54595c2e2b7991

Description

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

References

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