CVE-2025-30189
HIGHDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
Moderate risk: more likely to be exploited than 42% of all known CVEs.
References
Related Vulnerabilities
Other CWE-1250 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-10976 | Medium | 4.2 | 0.8% | - | Fix |
| CVE-2023-22405 | Medium | 6.5 | 0.3% | - | Fix |
| CVE-2022-22234 | Medium | 5.5 | 0.2% | - | Fix |
| CVE-2025-32899 | Medium | 4.3 | 0.2% | - | - |
Common questions
How do I fix CVE-2025-30189?
Upgrade dovecot on debian 13 to 1:2.4.1+dfsg1-6+deb13u1 or later.
Is CVE-2025-30189 being actively exploited?
Not that we know of. CVE-2025-30189 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.54% is the estimated probability that it will be exploited in the next 30 days. That is higher than 42% of all scored CVEs.
How severe is CVE-2025-30189?
CVE-2025-30189 has a CVSS v3 base score of 7.4, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2025-30189 affect?
Published advisories record a fix for dovecot (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2025-30189
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-27.