Description
Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.
Published: 2026-09-19
Score: 7 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DSA Debian DSA DSA-6522-1 exim4 security update
Ubuntu USN Ubuntu USN USN-8834-1 Exim vulnerabilities
History

Tue, 22 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 20 Sep 2026 00:45:00 +0000

Type Values Removed Values Added
Title Out-of-Bounds Write via Proxy-Protocol in Exim

Sat, 19 Sep 2026 23:00:00 +0000

Type Values Removed Values Added
Description Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.
First Time appeared Exim
Exim exim
Weaknesses CWE-787
CPEs cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
Vendors & Products Exim
Exim exim
References
Metrics cvssV3_1

{'score': 7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-22T16:07:39.291Z

Reserved: 2026-09-19T22:46:24.165Z

Link: CVE-2026-94054

cve-icon Vulnrichment

Updated: 2026-09-22T16:07:06.281Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-19T23:17:10.827

Modified: 2026-09-24T20:47:34.840

Link: CVE-2026-94054

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-20T01:45:16Z

Weaknesses