Name: CVE-2026-94054: Out-of-bounds Write
Creator: Rapid7
Published: 2026-09-19T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-94054, CWE-787, CVSS 5.3, EPSS 0.00268

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.

CVSS Details

CVSS 3.1 Base Score: 5.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade exim4	Sep 30, 2026	Sep 19, 2026
Exim	—	Upgrade Exim to version 4.100.1	Sep 25, 2026	Sep 19, 2026
Ubuntu	—	Upgrade exim4	Sep 28, 2026	Sep 28, 2026

Prioritise with Active Threat Intelligence

With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.

Explore Intelligence Hub

MDR Buyer's Guide

Global Threat Landscape Report

Grow your business

CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence