CVE-2025-30189

EUVD-2025-37318
When cache is enabled, some passdb/userdb drivers incorrectly cache all users with same cache key, causing wrong cached information to be used for these users. After cached login, all subsequent logins are for same user. Install fixed version or disable caching either globally or for the impacted passdb/userdb drivers. No publicly available exploits are known.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.4 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 41%
Debian logo
Debian Releases
Debian Product
Codename
dovecot
bookworm
1:2.3.19.1+dfsg1-2.1+deb12u5
fixed
bookworm (security)
1:2.3.19.1+dfsg1-2.1+deb12u6
fixed
bullseye
1:2.3.13+dfsg1-2+deb11u1
fixed
bullseye (security)
1:2.3.13+dfsg1-2+deb11u4
fixed
forky
1:2.4.4+dfsg1-1
fixed
sid
1:2.4.4+dfsg1-1
fixed
trixie
1:2.4.1+dfsg1-6+deb13u5
fixed
trixie (security)
1:2.4.1+dfsg1-6+deb13u6
fixed
Common Weakness Enumeration
References
https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json
http://seclists.org/fulldisclosure/2025/Oct/29
http://www.openwall.com/lists/oss-security/2025/10/29/4