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VulnerabilityPublished Updated

CVE-2025-48004: Microsoft Windows 11 version 22H2 · Use After Free

Affects Microsoft Windows 11 version 22H2Source CVE Database V5

0

Not known to be exploited · CVSS 7.4 High.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
2.1% chance of exploitation in 30 days – higher than 81% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Oct 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

  1. Restrict local access: Limit local user accounts and enforce the principle of least privilege to reduce the number of users who can attempt exploitation.
  2. Monitor and audit: Implement enhanced logging and monitoring of local privilege escalation attempts and unusual system behavior related to file system operations.
  3. Use application control: Employ application whitelisting and endpoint protection solutions to detect and block suspicious processes or code execution attempts.
  4. Network segmentation: Isolate critical systems running Windows 11 22H2 to limit lateral movement opportunities for attackers who gain local access.
  5. Prepare for patching: Stay informed on Microsoft’s security advisories and deploy official patches immediately upon release.
  6. Employ virtualization or sandboxing: For high-risk environments, consider running untrusted applications in isolated environments to reduce impact.
  7. Educate users: Train users on the risks of local access compromise and enforce strong authentication mechanisms to prevent unauthorized physical or remote local access.
  8. Incident response readiness: Develop and test incident response plans focusing on local privilege escalation scenarios to enable rapid containment.

Description

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

References

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