{"cve":"CVE-2020-14954","nvd":{"published":"2020-06-21T17:15:09.603","modified":"2026-06-17T02:55:49.630","status":"Modified","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.\"","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9},"cwes":["CWE-74"],"references":["http://lists.mutt.org/pipermail/mutt-announce/Week-of-Mon-20200615/000023.html","http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00064.html","http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00070.html","http://www.mutt.org/","https://github.com/neomutt/neomutt/commit/fb013ec666759cb8a9e294347c7b4c1f597639cc"],"products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora","mutt:mutt","neomutt:neomutt","opensuse:leap"],"source":"nvd","synced_at":"2026-10-19T21:05:42.039641217+00:00"},"epss":{"cve":"CVE-2020-14954","score":0.02307,"percentile":0.83362,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}