Mutt before 1.14.4 and NeoMutt before 2020-06-19 have a STARTTLS buffering issue that affects IMAP, SMTP, and POP3. When a server sends a "begin TLS" response, the client reads additional data (e.g., from a man-in-the-middle attacker) and evaluates it in a TLS context, aka "response injection."

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2268-1 mutt security update
Debian DLA Debian DLA DLA-2268-2 mutt regression update
Debian DSA Debian DSA DSA-4708-1 neomutt security update
EUVD EUVD EUVD-2020-7089 Mutt before 1.14.4 and NeoMutt before 2020-06-19 have a STARTTLS buffering issue that affects IMAP, SMTP, and POP3. When a server sends a "begin TLS" response, the client reads additional data (e.g., from a man-in-the-middle attacker) and evaluates it in a TLS context, aka "response injection."
Ubuntu USN Ubuntu USN USN-4403-1 Mutt vulnerability and regression
Ubuntu USN Ubuntu USN USN-7204-1 NeoMutt vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.11936}

epss

{'score': 0.05464}


Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.066}

epss

{'score': 0.11936}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T13:00:52.083Z

Reserved: 2020-06-21T00:00:00

Link: CVE-2020-14954

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-06-21T17:15:09.603

Modified: 2024-11-21T05:04:30.410

Link: CVE-2020-14954

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-06-16T00:00:00Z

Links: CVE-2020-14954 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses