Mutt does not verify that the smtps server hostname matches the domain name of the subject of an X.509 certificate, which allows man-in-the-middle attackers to spoof an SSL SMTP server via an arbitrary certificate, a different vulnerability than CVE-2009-3766.
Conclusion & alert: CVE-2011-1429 is rated Moderate Risk (49/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.47%). Core evidence: EPSS rose +1.20% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.28% | 1.47% | +1.20% |
| 2 | 2026-06-06 | 0.24% | 0.28% | +0.03% |
| 3 | 2026-03-04 | — | 0.24% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.8 | 2.0 | MEDIUM |
|
8.6 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2011-1429 low priority: Debian including 1 source packages (mutt), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2011-1429 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2011-1429 |
ubuntu
|
medium | CVE-2011-1429 medium priority: Ubuntu including 1 source packages (mutt), 7 status rows across 7 suites (dapper, hardy, karmic, lucid, maverick, natty, upstream): released 4, ignored 2, not-affected 1. | https://ubuntu.com/security/CVE-2011-1429 |