CVE-2025-25198Public exploitNetwork attack vector

Account takeover via poisoned password-reset links

Published Feb 12, 2025 · Updated Feb 12, 2025

Password-reset poisoning in mailcow: dockerized before 2025-01a allows remote attackers to redirect reset links with a crafted Host header. The password-reset handler trusts the request Host value when constructing the emailed reset URL instead of binding it to the configured service hostname. Account takeover requires password-reset notifications to be enabled and a targeted user to click the poisoned link, which exposes that user's reset token.

CVSS severity7.1
High
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Password-reset poisoning in mailcow: dockerized before 2025-01a allows remote attackers to redirect reset links with a crafted Host header. The password-reset handler trusts the request Host value when constructing the emailed reset URL instead of binding it to the configured service hostname. Account takeover requires password-reset notifications to be enabled and a targeted user to click the poisoned link, which exposes that user's reset token.

The record

CVE
CVE-2025-25198
Published
Feb 12, 2025
Updated
Feb 12, 2025
Vendor
mailcow
Product
mailcow: dockerized
Classifications
CWE-601, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2025-01a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

mailcow · mailcow: dockerizedversion=< 2025-01a

Published CVSS scores

7.1GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Spearphishing Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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