How severe is CVE-2023-6740?

CVE-2023-6740 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-6740 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6740?

CVE-2023-6740 primarily affects Checkmk. In total, 118 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-6740?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-6740 have an EU (EUVD) identifier?

Yes. CVE-2023-6740 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-58953.

When was CVE-2023-6740 published?

CVE-2023-6740 was published on 2024-01-12 and last updated on 2026-06-17.

CVE-2023-6740

CVE-2023-6740 is a high-severity vulnerability in Checkmk with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-58953
Weakness: CWE-269
Affected product: Checkmk
Published: 2024-01-12
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2023-6740?: 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
How severe is CVE-2023-6740?: CVE-2023-6740 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-6740 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6740?: CVE-2023-6740 primarily affects Checkmk. In total, 118 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-6740?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-6740 have an EU (EUVD) identifier?: Yes. CVE-2023-6740 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-58953.
When was CVE-2023-6740 published?: CVE-2023-6740 was published on 2024-01-12 and last updated on 2026-06-17.

References

https://checkmk.com/werk/16163

Affected products (118)

cpe:2.3:a:checkmk:checkmk:2.0.0:b1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:b2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:b3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:b4:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:b5:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:b6:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:b7:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:b8:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:i1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p1:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p10:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p11:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p12:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p13:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p14:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p15:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p16:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p17:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p18:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p19:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p2:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p20:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p21:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p22:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p23:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p24:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p25:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p26:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p27:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p28:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p29:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p3:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p30:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p31:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p32:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p33:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p34:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p35:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p36:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.0.0:p37:*:*:*:*:*:*

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