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% (77th 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% (77th 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% (77th 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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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

181.143.162.230 (ipv4-addr)
61.19.69.203 (ipv4-addr)
50.255.62.89 (ipv4-addr)
218.4.91.163 (ipv4-addr)
45.84.120.3 (ipv4-addr)
45.232.73.84 (ipv4-addr)
223.197.186.7 (ipv4-addr)
218.51.148.194 (ipv4-addr)