[NEW] [low] Checkmk: Vulnerability allows bypassing security measures and manipulating files
A remote, authenticated attacker can exploit a vulnerability in Checkmk to bypass security measures and manipulate files.
CSIRTS triage
- What
- A vulnerability allows a remote, authenticated attacker to bypass security measures and manipulate files.
- Who is affected
- Authenticated users of Checkmk.
- Urgency
- Remediation is low urgency as the impact is limited to authenticated users.
- Action
- Apply available updates to Checkmk.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2519
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-2026-152270.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-15227 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
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-2026-15227: Missing authorization in Checkmk <2.5.0p10, <2.4.0p35, <2.3.0p49, and 2.2.0 (EOL) allows an au…nvd · 2026-07-31
- medium[NEW] [medium] Checkmk: Multiple vulnerabilities allow bypassing of security measurescert-bund · 2026-07-29
- medium[NEW] [medium] Checkmk: Multiple vulnerabilitiescert-bund · 2026-07-22
- unknownCVE-2026-8593: Improper permission enforcement in Checkmk versions 2.5.0 before 2.5.0p9, 2.4.0 before 2.4.0p34…nvd · 2026-07-21
- unknownCVE-2026-14852: Privilege escalation in Checkmk versions 2.5.0 before 2.5.0p9, 2.4.0 before 2.4.0p34, 2.3.0 be…nvd · 2026-07-14
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