CVE-2026-45158: critical vulnerability in opnsense core
OPNsense: Command Injection via Attacker-Controlled DHCP Config
Published · Updated
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.8%
exploitation probability
0.8%top 44% of all CVEs
observed exploitation
nono source reports it
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the DHCP configuration of the configured interface, which is processed by a shell script, allowing remote code execution as root on the underlying operating system. This vulnerability is fixed in 26.1.8.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
opnsense · coreRelated CVEs — opnsense core
In the same product, most dangerous first.
CVE-2026-44193CRITICALOPNsense: RCE via XMLRPC endpoint using `opnsense.restore_config_section` methodEPSS 0.9%CVE-2026-44194CRITICALOPNsense: RCE on user managmentEPSS 0.8%CVE-2026-34578HIGHOPNsense has an LDAP Injection via Unsanitized Username in AuthenticationEPSS 0.5%CVE-2026-53581CRITICALntp: write path traversalEPSS 0.5%CVE-2026-44195MEDIUMOPNsense: Authentication lockout bypassEPSS 0.4%CVE-2026-30868MEDIUMCross-Site Request Forgery (CSRF) in opnsense/coreEPSS 0.2%