Heap-Based Buffer Overflow Vulnerability in Microsoft Edge by Microsoft
CVE-2026-69486

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Edge (chromium-based)
Vendor
CVE Published:
15 September 2026

What is CVE-2026-69486?

A heap-based buffer overflow vulnerability in Microsoft Edge (Chromium-based) can allow unauthorized attackers to execute arbitrary code over a network connection. This vulnerability could lead to significant security risks, making prompt action essential for affected users. To mitigate the risk, users are advised to apply the latest security updates provided by Microsoft. More information is available in the vendor's advisory.

Affected Version(s)

Microsoft Edge (Chromium-based) 1.0.0.0 < 153.0.4234.32

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.