CVE-2026-96203: Use After Free
Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
Other sources
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 155.0.4283.45
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
The vector is network-based and requires no privileges, but it does require user interaction. The available data does not specify what action the user must take.
What is the potential impact if exploitation succeeds?
An unauthorized attacker may elevate privileges. The severity vector indicates high impact to confidentiality, integrity, and availability.
Is exploit code or confirmed exploitation publicly available?
The exploit code maturity is listed as unproven (E:U). The provided data does not state that exploitation has been observed in the wild.