CVE-2025-32359Network attack vector

Two-factor configuration tampering via API reauthentication bypass

Published Apr 5, 2025 · Updated Apr 7, 2025

Incorrect access control in Zammad 6.4.x before 6.4.2 allows remote authenticated users to change two-factor settings through the API. The two-factor configuration API accepts the change without verifying the current password because reauthentication was enforced only by the frontend. A valid user session is required, and the bypass permits modification of that account's two-factor authentication configuration.

CVSS severity4.8
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in Zammad 6.4.x before 6.4.2 allows remote authenticated users to change two-factor settings through the API. The two-factor configuration API accepts the change without verifying the current password because reauthentication was enforced only by the frontend. A valid user session is required, and the bypass permits modification of that account's two-factor authentication configuration.

The record

CVE
CVE-2025-32359
Published
Apr 5, 2025
Updated
Apr 7, 2025
Vendor
Zammad
Product
Zammad
Classifications
CWE-602, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 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=6.4 <6.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zammad · Zammadversion=6.4 <6.4.2

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.8MITRECVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-602Client-Side Enforcement of Server-Side Security
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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