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CVE-2026-99172VulnerabilityPublished

Microsoft · ipc: drop the mqueue mount with kern_unmount() on setup failure

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99172· Low

Not known to be exploited : upgrade to f0e48172a59e517e613b73f73cc35f24fd123aeb or c0620b648321fff654173d238d4a85298ea16d05 when convenient.

Data as of 29 Oct 2026, 11:35 UTC

Severity
Low

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in f0e48172a59e517e613b73f73cc35f24fd123aeb, c0620b648321fff654173d238d4a85298ea16d05

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 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 29 Oct 2026.

What to do

Upgrade Linux to f0e48172a59e517e613b73f73cc35f24fd123aeb or c0620b648321fff654173d238d4a85298ea16d05.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ dc55e35f9e810f23dd69cfdc91a3d636023f57a2, < f0e48172a59e517e613b73f73cc35f24fd123aeb
Fixed in
  • f0e48172a59e517e613b73f73cc35f24fd123aeb
LinuxLinuxAffected
  • ≥ dc55e35f9e810f23dd69cfdc91a3d636023f57a2, < c0620b648321fff654173d238d4a85298ea16d05
Fixed in
  • c0620b648321fff654173d238d4a85298ea16d05
LinuxLinuxAffected
  • =5.19
Fixed in–

Description

CVE-2026-99172 is a vulnerability related to the IPC subsystem where the mqueue mount is dropped using kern_unmount() upon setup failure. The advisory provides no further technical details or impact description. The affected product is Microsoft software version 3.0. No CVSS score or exploit information is available.

References

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