Local privilege escalation via use-after-free
Published Aug 12, 2025 · Updated Feb 26, 2026
Use-after-free in Microsoft Windows PrintWorkflowUserSvc before 10.0.26100.4946 allows local users to elevate privileges. Microsoft identifies the affected service and memory-lifetime error but has not disclosed the freed object, triggering operation, or code path. Exploitation requires low-privileged local access and a high-complexity sequence, and successful exploitation grants elevated control over the host.
Summary
What happened
Use-after-free in Microsoft Windows PrintWorkflowUserSvc before 10.0.26100.4946 allows local users to elevate privileges. Microsoft identifies the affected service and memory-lifetime error but has not disclosed the freed object, triggering operation, or code path. Exploitation requires low-privileged local access and a high-complexity sequence, and successful exploitation grants elevated control over the host.
The record
- CVE
- CVE-2025-53133
- Published
- Aug 12, 2025
- Updated
- Feb 26, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 12, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.26100.0 <10.0.26100.4946
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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