CVE Explorer
CVE-2026-42511
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.
A rogue DHCP server may be able to execute arbirary code as root on a system running dhclient.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unknown","modules":["dhclient"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"lessThan":"p7","status":"affected","version":"15.0-RELEASE","versionType":"release"},{"lessThan":"p3","status":"affected","version":"14.4-RELEASE","versionType":"release"},{"lessThan":"p12","status":"affected","version":"14.3-RELEASE","versionType":"release"},{"lessThan":"p13","status":"affected","version":"13.5-RELEASE","versionType":"release"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:dac68da8dcaef17a6e80363fef2cc070f4208a8cda04aa8e3cc4cd33e27668ab · sha256:d7ac77ab0a8f8f89… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:dac68da8dcaef17a6e80363fef2cc070f4208a8cda04aa8e3cc4cd33e27668ab · sha256:d7ac77ab0a8f8f89… · /containers/adp/0/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-149","description":"CWE-149: Improper Neutralization of Quoting Syntax","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:dac68da8dcaef17a6e80363fef2cc070f4208a8cda04aa8e3cc4cd33e27668ab · sha256:d7ac77ab0a8f8f89… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:12.dhclient.asc"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:dac68da8dcaef17a6e80363fef2cc070f4208a8cda04aa8e3cc4cd33e27668ab · sha256:d7ac77ab0a8f8f89… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.