CVE Watch16 oct 2026

CVE-2026-53582

OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.10, the Trust module stores attacker-controlled certificate

CVSS

7.1

Alto

EPSS

0.7%

p53

KEV

—

Exploit Today

0-100

Publicado: 15 oct 2026 · Última mod.: 16 oct 2026 · CWE-91 · CWE-643

EPSS · 30d

0.7%EPSS · 30 días0.7%

2026-10-162026-10-20

Descripción técnica

OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.10, the Trust module stores attacker-controlled certificate authority and certificate refid values and interpolates them into XPath expressions in src/opnsense/mvc/app/models/OPNsense/Trust/FieldTypes/CAsField.php and src/opnsense/mvc/app/models/OPNsense/Trust/FieldTypes/CertificatesField.php. A user with CA Manager or Certificate Manager privileges can submit a crafted refid and repeatedly retrieve the object to obtain a boolean refcount oracle, allowing values in config.xml to be recovered character by character. Exposed values can include password hashes, API credentials, certificate private keys, VPN key material, and high-availability credentials, enabling privilege escalation and compromise of other security domains. This issue is fixed in version 26.1.10.

Referencias oficiales

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