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[NEW] [medium] OPNsense: Multiple Vulnerabilities

medium
A remote, authenticated attacker can exploit multiple vulnerabilities in OPNsense to execute arbitrary code, bypass security measures, conduct cross-site scripting attacks, trigger a denial-of-service condition, or manipulate and disclose data.

CSIRTS triage

vendor: OPNsenseproduct: OPNsenseRemote code executionAuthentication bypassCross-site scriptingDenial of servicePath traversal
What
Multiple vulnerabilities enable arbitrary code execution, security bypass, cross-site scripting, denial of service, and data manipulation or disclosure.
Who is affected
OPNsense deployments requiring authentication for exploitation.
Urgency
Medium; multiple vulnerability classes present but authentication required for some attacks.
Action
Update OPNsense to a patched version addressing the identified vulnerabilities.

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
medium
Published
2026-08-12
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-2026-2800

Recent advisories for OPNsense

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