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VulnerabilityPublished Updated

CVE-2025-53142: Microsoft Windows 11 version 22H2 · Use After Free

Affects Microsoft Windows 11 version 22H2Source CVE Database V5

0

Not known to be exploited · CVSS 7.0 High.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
7.0High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 2025

  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 Windows 11 version 22H2Affected
  • =10.0.22621.0
Fixed in–

AI-suggested

To mitigate CVE-2025-53142, organizations should implement the following specific measures: 1) Monitor official Microsoft channels closely for the release of security patches addressing this vulnerability and apply them immediately upon availability. 2) Restrict local user privileges rigorously by enforcing the principle of least privilege, ensuring users do not have unnecessary administrative rights. 3) Employ application whitelisting and endpoint protection solutions capable of detecting anomalous behavior indicative of exploitation attempts. 4) Audit and monitor local system activities for unusual privilege escalation attempts or memory corruption indicators. 5) Harden system configurations by disabling or restricting access to the Microsoft Brokering File System component where feasible. 6) Use virtualization-based security features and exploit mitigation technologies such as Control Flow Guard (CFG) and Data Execution Prevention (DEP) to reduce exploitation success. 7) Educate system administrators and users about the risks of local privilege escalation and the importance of maintaining updated systems. These targeted actions go beyond generic advice by focusing on reducing the attack surface and enhancing detection capabilities specific to this vulnerability.

Description

Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

References

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