Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-94184 Details

Description

A stack-based buffer overflow flaw was found in fetchmail when built with NTLM support. A malicious or compromised mail server advertising NTLM authentication can send a crafted Type 2 challenge that causes fetchmail to write past a fixed stack buffer while building the NTLM authenticate response. This may lead to remote code execution depending on stack-frame layout, or to authentication failure or process termination under memory hardening. Affects v5.0.8 through v6.6.6.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
http://www.openwall.com/lists/oss-security/2026/09/23/1	CVE
https://access.redhat.com/security/cve/CVE-2026-94184	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2537395	[email protected]
https://gitlab.com/fetchmail/fetchmail/-/commit/cb5be5c38471eec19e519ace0bc569176317ea92	[email protected]
https://www.fetchmail.info/fetchmail-SA-2026-01.txt	[email protected]
https://www.openwall.com/lists/oss-security/2026/06/27/8	[email protected]

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-121	Stack-based Buffer Overflow	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

7 change records found show changes

Date	Action	Recorded By
Sep 23, 2026	CVE Modified	CISA-ADP
Sep 23, 2026	CVE Modified	CVE
Sep 22, 2026	CVE Modified	[email protected]
Sep 22, 2026	CVE Modified	CISA-ADP
Sep 21, 2026	CVE Modified	[email protected]
Sep 21, 2026	New CVE Received	[email protected]
Sep 21, 2026	CVE Modified	CISA-ADP