How severe is CVE-2009-1390?

CVE-2009-1390 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2009-1390 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1390?

CVE-2009-1390 affects Mutt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-1390?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-1390 published?

CVE-2009-1390 was published on 2009-06-16 and last updated on 2026-06-16.

CVE-2009-1390

CVE-2009-1390 is a medium-severity vulnerability in Mutt with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Mutt
Published: 2009-06-16
Last modified: 2026-06-16

Description

Mutt 1.5.19, when linked against (1) OpenSSL (mutt_ssl.c) or (2) GnuTLS (mutt_ssl_gnutls.c), allows connections when only one TLS certificate in the chain is accepted instead of verifying the entire chain, which allows remote attackers to spoof trusted servers via a man-in-the-middle attack.

Frequently asked questions

What is CVE-2009-1390?: Mutt 1.5.19, when linked against (1) OpenSSL (mutt_ssl.c) or (2) GnuTLS (mutt_ssl_gnutls.c), allows connections when only one TLS certificate in the chain is accepted instead of verifying the entire chain, which allows remote attackers to spoof trusted servers via a man-in-the-middle attack.
How severe is CVE-2009-1390?: CVE-2009-1390 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2009-1390 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1390?: CVE-2009-1390 affects Mutt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-1390?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-1390 published?: CVE-2009-1390 was published on 2009-06-16 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mutt:mutt:1.5.19:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

50.255.62.89 (ipv4-addr)
218.4.91.163 (ipv4-addr)
203.192.232.180 (ipv4-addr)
200.77.172.159 (ipv4-addr)
20.157.117.15 (ipv4-addr)
197.44.15.210 (ipv4-addr)
177.53.215.134 (ipv4-addr)
166.62.41.190 (ipv4-addr)