7.4

CVE-2025-30189: open-xchange gmbh ox dovecot pro

CVSS: 7.4v3.1HighDeferred
AliasesALPINE-CVE-2025-30189SUSE-SU-2025:21159-1UBUNTU-CVE-2025-30189
Published 31-10-2025Last modified 27-03-2026
Open JSON

Vulnerability summary

CVE-2025-30189 is a high (CVSS 7.4) vulnerability in open-xchange gmbh ox dovecot pro. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 46.3% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.57%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 31-10-2025
    PublishedVulnerability first disclosed.
  2. 27-03-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.57%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

+0.03 pp

From 0.54% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.57%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Opensuse2 products
  • dovecot24&distro=openSUSE Leap 16.0< 2.4.2-160000.1.1
  • dovecot24&distro=openSUSE Tumbleweed< 2.4.2-1.1
Suse2 products
  • dovecot24&distro=SUSE Linux Enterprise Server 16.0< 2.4.2-160000.1.1
  • dovecot24&distro=SUSE Linux Enterprise Server for SAP applications 16.0< 2.4.2-160000.1.1
Alpine1 product
  • dovecot< 2.4.2-r0
Debian1 product
  • dovecot< 1:2.4.1+dfsg1-7 | < 1:2.4.1+dfsg1-6+deb13u1
Open-xchange gmbh1 product
Ubuntu1 product
  • dovecot< 1:2.4.1+dfsg1-5ubuntu4

6 vendors · 8 products

References

10 links