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CVE-2026-53167VulnerabilityPublished Updated

Microsoft · fuse: limit FUSE_NOTIFY_RETRIEVE to uptodate folios

Affects MicrosoftSource GCVE Database

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Not known to be exploited · CVSS 5.5 Medium · fixed in 3.0 : update Microsoft when convenient.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.0
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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 29 Oct 2026.

What to do

Affected software

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

AI-suggested

A fix is available in Linux kernel version 3.0. Systems should be updated to this version or later to remediate the vulnerability. Additionally, enabling automatic zero-initialization of page allocations via CONFIG_INIT_ON_ALLOC_DEFAULT_ON or the kernel parameter init_on_alloc=1 can mitigate the security impact. No known exploits are reported in the wild.

Description

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

References

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