CVE-2020-14954

MediumCVSS 5.9/10Last modified Jun 17, 2026

Description

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."

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-74

Affected software

No affected versions have been published.

Timeline

Published: Jun 21, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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