CVE-2020-7046

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in command parameters, as demonstrated by the unauthenticated triggering of a submission-login infinite loop.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-835

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://www.openwall.com/lists/oss-security/2020/02/12/1Mailing List, Third Party Advisory
https://dovecot.org/pipermail/dovecot-news/2020-February/000431.htmlMailing List, Vendor Advisory
https://dovecot.org/securityVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/
http://www.openwall.com/lists/oss-security/2020/02/12/1Mailing List, Third Party Advisory
https://dovecot.org/pipermail/dovecot-news/2020-February/000431.htmlMailing List, Vendor Advisory
https://dovecot.org/securityVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/

Timeline

Published: Feb 12, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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