SEPTEMBER 18, 2026
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Case File

CVE-2026-15576

MEDIUM · CVSS 6.9 EPSS 0.27%

Source: NVD + CISA KEV + EPSS · Published 2026-08-21 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

Improper authentication in the agent receiver of Checkmk versions prior to 2.5.0p10 allows unauthenticated remote attackers to bypass mutual TLS client certificate verification by using a fixed placeholder identity in the request URL. This vulnerability primarily affects the Cloud, Ultimate, and Ultimate MT editions, potentially compromising the integrity and availability of relay endpoints. Organizations using these specific editions should prioritize patching to mitigate the risk of unauthorized access.

CVE
CVE-2026-15576
Severity
MEDIUM
CVSS
6.9
EPSS
0.27%

Original NVD Description

Improper authentication in the agent receiver of Checkmk <2.5.0p10 allows an unauthenticated remote attacker to bypass mutual TLS client certificate verification of relay endpoints by supplying a fixed placeholder identity in the request URL, resulting in limited impact on integrity and availability. Only the Cloud, Ultimate and Ultimate MT editions are affected, as other editions do not expose relay endpoints.