CVE-2026-88097 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
An attacker can exploit a use-after-free flaw in Microsoft Edge to elevate privileges locally.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88097?
CVE-2026-88097 is a high-severity use after free vulnerability in Microsoft Edge Chromium, published on 18 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locally.
Weakness: CWE-416
Which versions are affected by CVE-2026-88097?
It affects 1 product.
Products include Microsoft Edge Chromium.
How do I fix CVE-2026-88097?
No fix has been published for CVE-2026-88097 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-88097 being exploited?
There is no known exploitation of CVE-2026-88097 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Edge Chromium
- CVE-2024-21326 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2023-35618 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2023-36735 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2022-33649 Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
- CVE-2026-58289 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Sources
Also known as GHSA-h9w4-646p-4c73.