CVE-2023-1768

CVE-2023-1768 is a low-severity vulnerability in Checkmk with a CVSS 3.x base score of 3.7. 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-446.

Key facts

• Severity: Low (CVSS 3.x base score 3.7)
• EPSS exploit prediction: 1% (56th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-446
• Affected product: Checkmk
• Published: 2023-04-04
• Last modified: 2026-06-17

Description

Inappropriate error handling in Tribe29 Checkmk <= 2.1.0p25, <= 2.0.0p34, <= 2.2.0b3 (beta), and all versions of Checkmk 1.6.0 causes the symmetric encryption of agent data to fail silently and transmit the data in plaintext in certain configurations.

Frequently asked questions

What is CVE-2023-1768?

Inappropriate error handling in Tribe29 Checkmk <= 2.1.0p25, <= 2.0.0p34, <= 2.2.0b3 (beta), and all versions of Checkmk 1.6.0 causes the symmetric encryption of agent data to fail silently and transmit the data in plaintext in certain configurations.

How severe is CVE-2023-1768?

CVE-2023-1768 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-1768 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-1768?

CVE-2023-1768 primarily affects Checkmk. In total, 135 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-1768?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-1768 published?

CVE-2023-1768 was published on 2023-04-04 and last updated on 2026-06-17.

References

• https://checkmk.com/werk/15423

Affected products (135)

• cpe:2.3:a:checkmk:checkmk:1.6.0:-:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b1:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b10:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b11:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b12:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b2:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b3:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b4:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b5:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b6:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b7:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b8:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:b9:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p1:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p10:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p11:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p12:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p13:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p14:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p15:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p16:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p17:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p18:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p19:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p2:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p20:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p21:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p22:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p23:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p24:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p25:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p26:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p27:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p28:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p29:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p3:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p4:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p5:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p6:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:1.6.0:p7:*:*:*:*:*:*

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