CVE-2026-66312 Buffer over-read in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network

Description

Buffer over-read in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.

Affected products and versions

Product	Affected versions	Fixed in
Microsoft Edge (Chromium-based) 1.0	1.0.0.0 → < 151.0.4129.59	151.0.4129.59

Other CVEs of Microsoft Edge (Chromium-based)

The 301 CVEs of Microsoft Edge (Chromium-based) →

CVE-2026-69446 Incorrect authorization in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges locally 4.4 Medium CVE-2026-88078 Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to… 4.3 Medium CVE-2026-88077 Integer overflow or wraparound in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate… 8.8 High CVE-2026-96196 Incomplete list of disallowed inputs in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a… 8.8 High