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CVE-2026-46299VulnerabilityPublished Updated

Microsoft · hfsplus: fix held lock freed on hfsplus_fill_super()

Affects MicrosoftSource GCVE Database

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Not known to be exploited · fixed in 3.0 : update Microsoft when convenient.

Data as of 30 Oct 2026, 11:52 UTC

Severity
Medium

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

EPSS
0.09% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.0

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Jun 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 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Security Response Center MicrosoftAffected
  • =3.0
  • Microsoft
  • Azure Linux
  • 3.0
  • Azure Linux 3.0
  • kernel
Fixed in–

AI-suggested

A fix is available in version 3.0 of the affected software. Users should update to this version to remediate the vulnerability.

Description

CVE-2026-46299 is a vulnerability in Microsoft software related to the hfsplus filesystem driver, specifically addressing a fix for a held lock freed in the hfsplus_fill_super() function. The affected version is 3.0. No CVSS score is provided, and there are no known exploits in the wild.

References

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