CVE-2025-25198
CVE-2025-25198 is a high-severity vulnerability in Mailcow with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.
Key facts
- Severity: High (CVSS 3.x base score 7.1)
- EPSS exploit prediction: 1% (60th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-4084
- Weakness: CWE-601
- Affected product: Mailcow
- Published:
- Last modified:
Description
mailcow: dockerized is an open source groupware/email suite based on docker. Prior to version 2025-01a, a vulnerability in mailcow's password reset functionality allows an attacker to manipulate the `Host HTTP` header to generate a password reset link pointing to an attacker-controlled domain. This can lead to account takeover if a user clicks the poisoned link. Version 2025-01a contains a patch. As a workaround, deactivate the password reset functionality by clearing `Notification email sender` and `Notification email subject` under System -> Configuration -> Options -> Password Settings.
Frequently asked questions
- What is CVE-2025-25198?
- mailcow: dockerized is an open source groupware/email suite based on docker. Prior to version 2025-01a, a vulnerability in mailcow's password reset functionality allows an attacker to manipulate the `Host HTTP` header to generate a password reset link pointing to an attacker-controlled domain. This can lead to account takeover if a user clicks the poisoned link. Version 2025-01a contains a patch. As a workaround, deactivate the password reset functionality by clearing `Notification email sender` and `Notification email subject` under System -> Configuration -> Options -> Password Settings.
- How severe is CVE-2025-25198?
- CVE-2025-25198 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity high, and availability none.
- Is CVE-2025-25198 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-25198?
- CVE-2025-25198 affects Mailcow. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-25198?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-25198 have an EU (EUVD) identifier?
- Yes. CVE-2025-25198 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4084.
- When was CVE-2025-25198 published?
- CVE-2025-25198 was published on 2025-02-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:mailcow:mailcow\:_dockerized:*:*:*:*:*:*:*:*
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