Local privilege escalation
Published Sep 18, 2026 · Updated Sep 18, 2026
Use-after-free memory corruption in Microsoft Edge before 153.0.4234.46 allows local users to elevate privileges. Microsoft has not published the affected component, the freed object's lifetime error, or the operation that reuses the dangling reference. Exploitation requires local access and a high-complexity condition; successful exploitation crosses a security boundary and grants elevated privileges.
Summary
What happened
Use-after-free memory corruption in Microsoft Edge before 153.0.4234.46 allows local users to elevate privileges. Microsoft has not published the affected component, the freed object's lifetime error, or the operation that reuses the dangling reference. Exploitation requires local access and a high-complexity condition; successful exploitation crosses a security boundary and grants elevated privileges.
The record
- CVE
- CVE-2026-88097
- Published
- Sep 18, 2026
- Updated
- Sep 18, 2026
- Vendor
- Microsoft Corporation
- Product
- Microsoft Edge (Chromium-based)
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 18, 2026CVE publishedPublication date reported by the CVE source.
- Sep 18, 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=1.0.0.0 <153.0.4234.46
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.
Activity data is delayed. The latest report is Sep 28, 2026.
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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