CVE-2026-94056CWE-908

CVE-2026-94056

High · published September 20, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
14.0
In the wild
Unconfirmed
What it is

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00238 · 14.0th percentile
Weakness
CWE-908 · Use of Uninitialized Resource
Published
2026-09-20T03:17Z
Affected products (1)
ProductVersionsFixed in
exim/exim< 4.100.14.100.1
References (1)
https://lists.exim.org/lurker/message/20260918.121220.0f87338e.en.html · [email protected]
EPSS history
Timeline
  • 21 SEP 03:37Z
    EPSS moved — → 0%
    epss
  • 19 SEP 22:52Z
    Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory
    cvelistv5