[NEW] [low] Checkmk: Vulnerability Enables Information Disclosure

lowCVE-2026-17548

A remote, authenticated attacker can exploit a vulnerability in Checkmk to disclose information.

CSIRTS triage

vendor: Checkmk product: Checkmk Information disclosure

What: An authenticated attacker can exploit a vulnerability in Checkmk to disclose information.
Who is affected: Checkmk deployments are affected; only authenticated attackers can exploit this vulnerability.
Urgency: Low; information disclosure with authentication requirement is lower risk than unauthenticated attacks.
Action: Apply Checkmk's security patch when available during normal maintenance windows.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: low
Published: 2026-08-25
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2985

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-175480.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-17548	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownCVE-2026-17548: Missing authorization in Checkmk <2.5.0p12, <2.4.0p36, <2.3.0p50 and all 2.2.0 versions allows…nvd

Recent advisories for Checkmk

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-17548: Missing authorization in Checkmk <2.5.0p12, <2.4.0p36, <2.3.0p50 and all 2.2.0 versions allows…nvd · 2026-08-25
medium[NEW] [medium] Checkmk: Multiple vulnerabilities allow bypassing of security measurescert-bund · 2026-08-24
unknownCVE-2026-15576: Improper authentication in the agent receiver of Checkmk <2.5.0p10 allows an unauthenticated r…nvd · 2026-08-21
low[NEW] [low] Checkmk: Vulnerability allows information disclosurecert-bund · 2026-08-21
unknownCVE-2026-7485: Incorrect authorization in frozen BI aggregations in Checkmk <2.5.0p2, <2.4.0p29, <2.3.0p47, an…nvd · 2026-08-20
low[NEW] [low] Checkmk: Vulnerability allows bypassing security measures and manipulating filescert-bund · 2026-08-03