CVE-2026-66312CWE-126

CVE-2026-66312

Medium · published August 4, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
65.4
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.01099 · 65.4th percentile
Weakness
CWE-126 · Buffer Over-read
Published
2026-08-04T04:17Z
Affected products (1)
ProductVersionsFixed in
microsoft/edge_chromium< 151.0.4129.59151.0.4129.59
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66312 · [email protected]
EPSS history
Timeline
  • 03 AUG 22:53Z
    Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
    cvelistv5