{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42511","assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","state":"PUBLISHED","assignerShortName":"freebsd","dateReserved":"2026-04-28T05:31:44.956Z","datePublished":"2026-04-30T06:56:36.929Z","dateUpdated":"2026-05-01T15:25:37.800Z"},"containers":{"cna":{"datePublic":"2026-04-29T19:00:00.000Z","title":"Remote code execution via malicious DHCP options","references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:12.dhclient.asc"}],"affected":[{"defaultStatus":"unknown","modules":["dhclient"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"status":"affected","versionType":"release","version":"15.0-RELEASE","lessThan":"p7"},{"status":"affected","versionType":"release","version":"14.4-RELEASE","lessThan":"p3"},{"status":"affected","versionType":"release","version":"14.3-RELEASE","lessThan":"p12"},{"status":"affected","versionType":"release","version":"13.5-RELEASE","lessThan":"p13"}]}],"credits":[{"lang":"en","type":"finder","value":"Joshua Rogers of AISLE Research Team"}],"descriptions":[{"lang":"en","value":"The BOOTP file field is written to the lease file without escaping embedded double-quotes, allowing injection of arbitrary dhclient.conf directives.  When the lease file is subsequently re-parsed by dhclient, e.g., after a system restart, an attacker-controlled field from the lease is passed to dhclient-script(8), which evaluates it.\n\nA rogue DHCP server may be able to execute arbirary code as root on a system running dhclient."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-149","description":"CWE-149: Improper Neutralization of Quoting Syntax","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd","dateUpdated":"2026-04-30T06:56:36.929Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":8.1,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-01T03:55:55.336127Z","id":"CVE-2026-42511","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-01T15:25:37.800Z"}}]}}