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[UPDATE] [high] Webmin: Multiple vulnerabilities

highCVE-2026-42210
An attacker can exploit multiple vulnerabilities in Webmin to bypass security measures and execute arbitrary program code with administrator rights.

CSIRTS triage

vendor: Webminproduct: WebminAuthentication bypassOther
What
Multiple vulnerabilities can be exploited to bypass security measures and execute arbitrary program code with administrator rights.
Who is affected
Users of Webmin.
Urgency
Remediation is urgent due to the high severity of the vulnerabilities.
Action
Update to the latest version of Webmin.

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
high
Published
2026-07-21
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-2026-1561

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-42210coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Webmin

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.

More from CERT-Bund (BSI) Security Advisories