Use After Free in Dovecot

CVE-2020-10958

In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command.

Vulnerability class: Use-After-Free

EPSS: 0.061 (92.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-10958?
CVE-2020-10958 is a medium-severity vulnerability in Dovecot, classified under Use After Free. CVSS score: 5.3/10. Published 2020-05-18.
How severe is CVE-2020-10958?
Medium severity. CVSS v3 base score is 5.3 out of 10.