CVE-2026-70149CWE-122CWE-190

CVE-2026-70149

High · published October 13, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
57.4
In the wild
Unconfirmed
What it is

Exposure of sensitive information to an unauthorized actor in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to disclose information locally.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00837 · 57.4th percentile
Weaknesses
CWE-122 · Heap-based Buffer Overflow; CWE-190 · Integer Overflow or Wraparound
Published
2026-10-13T23:19Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70149 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:33Z
    EPSS moved — → 1%
    epss
  • 13 OCT 19:00Z
    Windows Client Side Caching driver (csc.sys) Elevation of Privilege Vulnerability
    cvelistv5
  • 13 OCT 19:00Z
    Windows Client Side Caching driver (csc.sys) Elevation of Privilege Vulnerability
    cvelistv5