Local privilege escalation via notification use-after-free
Published Jul 8, 2025 · Updated Feb 13, 2026
Use-after-free in Windows Notification in affected Microsoft Windows releases allows local users to elevate privileges via local access. Microsoft identifies the component and memory-lifetime error but has not disclosed the freed object, triggering operation, or code path. Reachability requires prior low-privileged access to an affected host; successful exploitation raises privileges, while the resulting privilege level remains undisclosed.
Summary
What happened
Use-after-free in Windows Notification in affected Microsoft Windows releases allows local users to elevate privileges via local access. Microsoft identifies the component and memory-lifetime error but has not disclosed the freed object, triggering operation, or code path. Reachability requires prior low-privileged access to an affected host; successful exploitation raises privileges, while the resulting privilege level remains undisclosed.
The record
- CVE
- CVE-2025-49726
- Published
- Jul 8, 2025
- Updated
- Feb 13, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 8, 2025CVE publishedPublication date reported by the CVE source.
- Feb 13, 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 <10.0.17763.7558
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.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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