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CVE-2026-98992VulnerabilityPublished Updated

Microsoft · namespace: don't copy an unmounted mount tree

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98992· Medium

Not known to be exploited · fixed in b47b40c4f058418f9707454543179df240796aad : 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 b47b40c4f058418f9707454543179df240796aad, 94d05b62dc7aea236db20166e79ee002e466393a, 86a2d56b1960720bf1844441c0890621e9db2f25 +5

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
  • ≥ e149ed2b805fefdccf7ccdfc19eca22fdd4514ac, < b47b40c4f058418f9707454543179df240796aad
Fixed in
  • b47b40c4f058418f9707454543179df240796aad
LinuxLinuxAffected
  • ≥ e149ed2b805fefdccf7ccdfc19eca22fdd4514ac, < 94d05b62dc7aea236db20166e79ee002e466393a
Fixed in
  • 94d05b62dc7aea236db20166e79ee002e466393a
LinuxLinuxAffected
  • ≥ e149ed2b805fefdccf7ccdfc19eca22fdd4514ac, < 86a2d56b1960720bf1844441c0890621e9db2f25
Fixed in
  • 86a2d56b1960720bf1844441c0890621e9db2f25
LinuxLinuxAffected
  • ≥ e149ed2b805fefdccf7ccdfc19eca22fdd4514ac, < 31cf157298271392ab5fb0805b28d37c8d7a8057
Fixed in
  • 31cf157298271392ab5fb0805b28d37c8d7a8057
LinuxLinuxAffected
  • ≥ e149ed2b805fefdccf7ccdfc19eca22fdd4514ac, < 8d3527457e183cedee3003c2897314da49488311
Fixed in
  • 8d3527457e183cedee3003c2897314da49488311
LinuxLinuxAffected
  • ≥ e149ed2b805fefdccf7ccdfc19eca22fdd4514ac, < 8bacbf6be959973b28b691713a872c12eae69eec
Fixed in
  • 8bacbf6be959973b28b691713a872c12eae69eec

Description

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

References

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