CVE-2024-41958Network attack vector

Account takeover via wrong-user authenticator lookup

Published Aug 5, 2024 · Updated Aug 7, 2024

Authentication bypass in mailcow: dockerized before 2024-07 allows remote authenticated users to access 2FA-protected accounts. The get_tfa() function replaced a supplied target username with the attacker's session username, so login checked the wrong account's authenticators. Exploitation requires an existing account plus the target account's password and grants access to that target without its second factor.

CVSS severity6.6
Medium
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in mailcow: dockerized before 2024-07 allows remote authenticated users to access 2FA-protected accounts. The get_tfa() function replaced a supplied target username with the attacker's session username, so login checked the wrong account's authenticators. Exploitation requires an existing account plus the target account's password and grants access to that target without its second factor.

The record

CVE
CVE-2024-41958
Published
Aug 5, 2024
Updated
Aug 7, 2024
Vendor
mailcow
Product
mailcow: dockerized
Classifications
CWE-697, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 2024Record 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=< 2024-07

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

mailcow · mailcow: dockerizedversion=< 2024-07

Published CVSS scores

7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.6GitHub CNACVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-697Incorrect Comparison
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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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