CVE-2026-55945 Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
An authorized local attacker can exploit a race condition in Microsoft Edge to disclose sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-55945?
CVE-2026-55945 is a medium-severity vulnerability in Microsoft Edge Chromium, published on 3 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-based) allows an authorized attacker to disclose information locally.
Weakness: CWE-362
Which versions are affected by CVE-2026-55945?
It affects 1 product.
Products include Microsoft Edge Chromium.
How do I fix CVE-2026-55945?
No fix has been published for CVE-2026-55945 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-55945 being exploited?
There is no known exploitation of CVE-2026-55945 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-vr8w-r9rr-cvrq.