Checkmk: Insertion of Sensitive Information into Log File
CVE-2025-1075 is a high-severity insertion of sensitive information into log file vulnerability in Checkmk, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 2.3.0p27, 2.2.0p40 as the first without the flaw, so updating Checkmk to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.32% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Checkmk to 2.3.0p27 or 2.2.0p40, whichever matches your release line, or a later version.
- Read the advisory on checkmk.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Checkmk | Checkmk | 2.3.0 up to, but not including, 2.3.0p27; 2.2.0 up to, but not including, 2.2.0p40; 2.1.0 through 2.1.0p50 | 2.3.0p27, 2.2.0p40 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 5.6 | Medium | CNA (checkmk.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
Insertion of Sensitive Information into Log File in Checkmk GmbH's Checkmk versions <2.3.0p27, <2.2.0p40, and 2.1.0p51 (EOL) causes LDAP credentials to be written to Apache error log file accessible to administrators.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insertion of Sensitive Information into Log File
The product writes sensitive information to a log file.
How developers prevent this class of flaw
- Consider seriously the sensitivity of the information written into log files. Do not write secrets into the log files.
- Remove debug log files before deploying the application into production.
- Protect log files against unauthorized read/write.
More Insertion of Sensitive Information into Log File vulnerabilities (CWE-532)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Checkmk
- 9.4 Critical severity
- 9.4 Critical severity
- 9.4 Critical severity
- 7.1 High severity
- 8.6 High severity
- 7.8 High severity
Recent Insertion of Sensitive Information into Log File vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 9.4 Critical severity
- 7.5 High severity
- 7.1 High severity
- 9.3 Critical severity
Spotted an error? Tell us.