What’s Vulnerable › Vulnerabilities

CVE-2026-58276: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-03 · updated 2026-10-28
• Weakness: CWE-416

Description

Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft Edge (Chromium): before 150.0.4078.48 — fixed in 150.0.4078.48
• Microsoft Edge (Chromium): from 1.0.0.0 before 150.0.4078.48 — fixed in 150.0.4078.48

How to fix

Upgrade to a fixed version: Microsoft Edge (Chromium) 150.0.4078.48; Microsoft Edge (Chromium) 150.0.4078.48. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58276

Get alerted when CVE-2026-58276 or the next vulnerability affects your stack