CVE-2026-58641CWE-190

CVE-2026-58641

High · published August 11, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
39.4
In the wild
Unconfirmed
What it is

Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00466 · 39.4th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-08-11T21:18Z
Affected products (8)
ProductVersionsFixed in
microsoft/.net≥ 8.0.0, < 8.0.308.0.30
microsoft/.net≥ 9.0.0, < 9.0.199.0.19
microsoft/.net≥ 8.0.0, < 8.0.308.0.30
microsoft/.net≥ 9.0.0, < 9.0.199.0.19
microsoft/.net≥ 10.0.0, < 10.0.1110.0.11
microsoft/.net≥ 8.0.0, < 8.0.308.0.30
microsoft/.net≥ 9.0.0, < 9.0.199.0.19
microsoft/.net≥ 10.0.0, < 10.0.1110.0.11
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58641 · [email protected]
EPSS history
Timeline
  • 11 AUG 17:05Z
    .NET Elevation of Privilege Vulnerability
    cvelistv5