CVE-2022-40816

Name: CVE-2022-40816
Creator: NVD / NIST
Published: 2022-09-27T23:15:16.483+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2022-40816 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Zammad 5.2.1 is vulnerable to Incorrect Access Control. Zammad's asset handling mechanism has logic to ensure that customer users are not able to see personal information of other users. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

Zammad 5.2.1 is vulnerable to Incorrect Access Control. Zammad's asset handling mechanism has logic to ensure that customer users are not able to see personal information of other users. This logic was not effective when used through a web socket connection, so that a logged-in attacker would be able to fetch personal data of other users by querying the Zammad API. This issue is fixed in , 5.2.2.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.65%

46.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Zammad	Zammad	>= 5.2.0, < 5.2.2

References

https://zammad.com/de/advisories/zaa-2022-09Vendor Advisory
https://zammad.com/de/advisories/zaa-2022-09Vendor Advisory

Timeline

Published: Sep 27, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-40816?

How severe is CVE-2022-40816?

CVE-2022-40816 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2022-40816?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-40816?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST