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CVE-2026-31477VulnerabilityPublished Updated

Microsoft · ksmbd: fix memory leaks and NULL deref in smb2_lock()

Affects MicrosoftSource GCVE Database

0

Not known to be exploited.

Data as of 27 Oct 2026, 00:23 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Security Response Center MicrosoftAffected
  • =2.0
  • =3.0
Fixed in–

Description

This vulnerability involves memory leaks and a NULL pointer dereference in the smb2_lock() function of the ksmbd component. It affects specific versions 2.0 and 3.0 of the Microsoft product. No CVSS score or detailed impact information is provided. There are no known exploits in the wild at this time.

References

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