CVE-2026-88121CWE-416

CVE-2026-88121

High · published October 13, 2026

CVSS v3.1
8.0
EPSS
0%
Percentile
41.1
In the wild
Unconfirmed
What it is

Use after free in Windows Background Intelligent Transfer Service (BITS) allows an unauthorized attacker to execute code over a network.

The record
Technical detail
CVSS v3.1
8.0 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00488 · 41.1th percentile
Weakness
CWE-416 · Use After Free
Published
2026-10-13T23:21Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88121 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:35Z
    EPSS moved — → 0%
    epss
  • 13 OCT 19:01Z
    Windows Background Intelligent Transfer Service (BITS) Remote Code Execution Vulnerability
    cvelistv5
  • 13 OCT 19:01Z
    Windows Background Intelligent Transfer Service (BITS) Remote Code Execution Vulnerability
    cvelistv5