Microsoft Edge Addresses Chromium CVE-2026-110142 Use‑After‑Free Vulnerability

What happened

A use‑after‑free flaw (CVE‑2026‑110142) was discovered in the Chromium engine. The defect can be triggered by malformed web content and may allow an attacker to execute arbitrary code in the context of the browser.

Impact

Any user running a Chromium‑based browser that has not applied the latest security update is potentially vulnerable. Microsoft Edge, which incorporates Chromium, has incorporated the fix in its recent release.

Mitigation

• Ensure Microsoft Edge is updated to the latest version (check the version number against the official release notes).
• For environments that still use legacy Edge or other Chromium‑based browsers, apply the corresponding patch or upgrade to a supported version.
• Consider disabling untrusted plugins or extensions that could exploit the use‑after‑free path.

Monitoring

Watch for abnormal process creation or memory corruption indicators in Windows Event Logs (Event ID 4688, 4689) and browser crash reports. Any suspicious activity should be investigated promptly.