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CVE-2026-99247VulnerabilityPublished Updated

Microsoft · tracing: Do not initialize tracefs work if tracing is disabled

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99247· High

Not known to be exploited · fixed in e8665e884e076d894f3eed8b9ea28e37a6448604 : patch Microsoft soon.

Data as of 7 Nov 2026, 12:18 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in e8665e884e076d894f3eed8b9ea28e37a6448604, e8cfcd7e60eaa3b0dea4d71c64499604e7081736, b3b974008388ab59e44d764ba7a63c988fec2524 +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 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
  • ≥ 6621a7004684bfcff5af4c8e4d37989941f42a6b, < e8665e884e076d894f3eed8b9ea28e37a6448604
Fixed in
  • e8665e884e076d894f3eed8b9ea28e37a6448604
LinuxLinuxAffected
  • ≥ 6621a7004684bfcff5af4c8e4d37989941f42a6b, < e8cfcd7e60eaa3b0dea4d71c64499604e7081736
Fixed in
  • e8cfcd7e60eaa3b0dea4d71c64499604e7081736
LinuxLinuxAffected
  • ≥ 6621a7004684bfcff5af4c8e4d37989941f42a6b, < b3b974008388ab59e44d764ba7a63c988fec2524
Fixed in
  • b3b974008388ab59e44d764ba7a63c988fec2524
LinuxLinuxAffected
  • ≥ 6621a7004684bfcff5af4c8e4d37989941f42a6b, < afd38b10b1c6a5c5d6952b15b990596dab9684e6
Fixed in
  • afd38b10b1c6a5c5d6952b15b990596dab9684e6
LinuxLinuxAffected
  • ≥ 6621a7004684bfcff5af4c8e4d37989941f42a6b, < 7539c61f522ff693d9565a0411386c2236e776cd
Fixed in
  • 7539c61f522ff693d9565a0411386c2236e776cd
LinuxLinuxAffected
  • ≥ 6621a7004684bfcff5af4c8e4d37989941f42a6b, < 813e18881c6472eb229a63180ff42c808e3e949b
Fixed in
  • 813e18881c6472eb229a63180ff42c808e3e949b

Description

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

References

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