Local privilege escalation via undisclosed use-after-free
Published Apr 14, 2026 · Updated Apr 14, 2026
Use-after-free in Microsoft Windows UPnP Device Host allows local users with code execution to elevate privileges on affected systems. Microsoft identifies the affected component but has not disclosed the object, function, or lifetime operation that accesses freed memory. The attacker must already hold low-privileged local access, and successful exploitation grants elevated privileges on the host.
Summary
What happened
Use-after-free in Microsoft Windows UPnP Device Host allows local users with code execution to elevate privileges on affected systems. Microsoft identifies the affected component but has not disclosed the object, function, or lifetime operation that accesses freed memory. The attacker must already hold low-privileged local access, and successful exploitation grants elevated privileges on the host.
The record
- CVE
- CVE-2026-27915
- Published
- Apr 14, 2026
- Updated
- Apr 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 14, 2026CVE publishedPublication date reported by the CVE source.
- Apr 14, 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=10.0.17763.0 <10.0.17763.8644
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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