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CVE-2026-99115VulnerabilityPublished

FileSysIdentifier · ksmbd: fill

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99115· Medium

Not known to be exploited · fixed in db2267b27c054a6c2151ff7fbb67927e784f31d6 : update Microsoft when convenient.

Data as of 29 Oct 2026, 12:02 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in db2267b27c054a6c2151ff7fbb67927e784f31d6, beba2ef6f66a71f20531ac70a1acb0b221e362e9, ab057f271ef60ff8163818badc3de75c480eca07

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 db2267b27c054a6c2151ff7fbb67927e784f31d6, beba2ef6f66a71f20531ac70a1acb0b221e362e9 or ab057f271ef60ff8163818badc3de75c480eca07.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, < db2267b27c054a6c2151ff7fbb67927e784f31d6
Fixed in
  • db2267b27c054a6c2151ff7fbb67927e784f31d6
LinuxLinuxAffected
  • ≥ e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, < beba2ef6f66a71f20531ac70a1acb0b221e362e9
Fixed in
  • beba2ef6f66a71f20531ac70a1acb0b221e362e9
LinuxLinuxAffected
  • ≥ e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, < ab057f271ef60ff8163818badc3de75c480eca07
Fixed in
  • ab057f271ef60ff8163818badc3de75c480eca07
LinuxLinuxAffected
  • =5.15
Fixed in–

Description

This vulnerability involves the ksmbd component where the FileSysIdentifier field in FS_POSIX_INFORMATION is not properly filled. The information provided is minimal and does not describe the impact or exploitation details.

References

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