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CVE-2026-99052VulnerabilityPublished Updated

set_mnt_opts · selinux: preserve NATIVE_LABELS on already-initialized sb

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99052· High

Not known to be exploited · fixed in dc579e43b13cb65e55eabaae4f1a950e43567fb1 : patch Microsoft soon.

Data as of 7 Nov 2026, 12:33 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in dc579e43b13cb65e55eabaae4f1a950e43567fb1, c997832414f1d846de0a1fa38d7d4f62ba2ea917, a545def625860d4ccedc14fe45e884a62a041cef +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
  • ≥ eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864, < dc579e43b13cb65e55eabaae4f1a950e43567fb1
Fixed in
  • dc579e43b13cb65e55eabaae4f1a950e43567fb1
LinuxLinuxAffected
  • ≥ eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864, < c997832414f1d846de0a1fa38d7d4f62ba2ea917
Fixed in
  • c997832414f1d846de0a1fa38d7d4f62ba2ea917
LinuxLinuxAffected
  • ≥ eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864, < a545def625860d4ccedc14fe45e884a62a041cef
Fixed in
  • a545def625860d4ccedc14fe45e884a62a041cef
LinuxLinuxAffected
  • ≥ eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864, < a6da93c625b3557dd23ff6db45d2d1bafeae1565
Fixed in
  • a6da93c625b3557dd23ff6db45d2d1bafeae1565
LinuxLinuxAffected
  • ≥ eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864, < 22987d24a159ed7df3cdc9090ca5d61e58df0cac
Fixed in
  • 22987d24a159ed7df3cdc9090ca5d61e58df0cac
LinuxLinuxAffected
  • ≥ eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864, < 5509d498e1b9edafebd5a60ba3cb9ecfda23dc2b
Fixed in
  • 5509d498e1b9edafebd5a60ba3cb9ecfda23dc2b

Description

This vulnerability involves the SELinux component related to preserving NATIVE_LABELS on already-initialized security blobs in the set_mnt_opts function. The advisory references Microsoft products with affected versions 3.0 and 4.0. No detailed technical impact or exploitation information is provided.

References

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