CVE-2023-0284

Name: CVE-2023-0284
Creator: NVD / NIST
Published: 2023-01-26T21:18:07.03+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2023-0284 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk <= 2.1.0p19, Checkmk <= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk <= 2.1.0p19, Checkmk <= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.92%

55.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Checkmk	Checkmk	2.0.0	—
Checkmk	Checkmk	2.1.0	B1
Tribe29	Checkmk	>= 1.6.0, < 2.0.0	—

References

https://checkmk.com/werk/15181Vendor Advisory
https://checkmk.com/werk/15181Vendor Advisory

Timeline

Published: Jan 26, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-0284?

How severe is CVE-2023-0284?

CVE-2023-0284 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2023-0284?

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-2023-0284?

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

Scan your code now

Source: NVD / NIST