How severe is CVE-1999-0940?

CVE-1999-0940 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-0940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0940?

CVE-1999-0940 affects Mutt Mutt Mail Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-0940?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-0940 published?

CVE-1999-0940 was published on 1999-09-27 and last updated on 2026-06-16.

CVE-1999-0940

CVE-1999-0940 is a high-severity vulnerability in Mutt Mutt Mail Client with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mutt Mutt Mail Client
Published: 1999-09-27
Last modified: 2026-06-16

Description

Buffer overflow in mutt mail client allows remote attackers to execute commands via malformed MIME messages.

Frequently asked questions

What is CVE-1999-0940?: Buffer overflow in mutt mail client allows remote attackers to execute commands via malformed MIME messages.
How severe is CVE-1999-0940?: CVE-1999-0940 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-0940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0940?: CVE-1999-0940 affects Mutt Mutt Mail Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-0940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-0940 published?: CVE-1999-0940 was published on 1999-09-27 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0940

Affected products (1)

cpe:2.3:a:mutt:mutt_mail_client:*:*:*:*:*:*:*:*