In plain language
What this advisory means
A security flaw known as CVE-2026-76022 was found in the Chromium browser engine, which can cause a buffer overflow in its network component. Since Microsoft Edge (Chromium-based) uses Chromium, this vulnerability also affected Edge. Microsoft updated Edge to a version that includes Chromium’s fix, making Edge safe from this issue.
Technical explanation
How the issue affects the environment
CVE-2026-76022 is a buffer overflow vulnerability within the network code of the Chromium open-source browser engine. Buffer overflow occurs when a program writes more data to a buffer than it can hold, potentially leading to arbitrary code execution or crashes. Because Microsoft Edge (Chromium-based) integrates Chromium, it inherited this vulnerability. Microsoft Edge version 151.0.4129.107 incorporates the Chromium fix, addressing this buffer overflow risk.
Operational impact
Why teams should care
If exploited, this buffer overflow vulnerability could allow attackers to crash Microsoft Edge or execute malicious code remotely, potentially compromising users' systems. Organizations using Microsoft Edge needed to update to the patched version to maintain secure browsing and protect sensitive information.
Immediate action
Update Microsoft Edge (Chromium-based) to version 151.0.4129.107 or later, which includes the Chromium fix for the buffer overflow vulnerability.
Affected and fixed releases
Temporary risk reduction
No separate workaround was supplied in the source feed. Use the official vendor advisory before changing production controls.
Evidence and validation checklist
- Microsoft Security Response Center advisory for CVE-2026-76022
- Microsoft Edge release notes for version 151.0.4129.107
- Chromium project fix history referenced by Microsoft Security Response Center
- Official Microsoft Edge update documentation
Authoritative reference
Microsoft Security Response Center
QCS detected and normalized this record from the official source. Vendor guidance remains authoritative.