Privilege escalation in jar_signature

published 2024-01-12 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-58953

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits: 0; none known

Privilege escalation in jar_signature agent plugin in Checkmk before 2.2.0p18, 2.1.0p38 and 2.0.0p39 allows local user to escalate privileges

Patch / fix

fixed in 1 links 1

Checkmk GmbH Checkmk 2.1.0p38, 2.2.0p18

checkmk.com/werk/16163 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 18 mo ago (2025-05-08)

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Checkmk GmbH Checkmk

Classification

Weakness

CWE-427 Uncontrolled Search Path Element
CWE-269 Improper Privilege Management

References

checkmk.com /werk/16163
patch, vendor-advisory

Sources

CVE List CVE-2023-6740
NVD CVE-2023-6740

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary