CVE Explorer
CVE-2026-45259
sigqueue(2) was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the implementation of kern_sigqueue did not include a capability mode check restricting signal delivery to the calling process's own PID.
A process in capability mode can use sigqueue(2) to send signals to any process it could signal following standard Unix permissions, bypassing the Capsicum sandbox restriction. A compromised sandboxed process could interfere with other processes, for example
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unknown","modules":["capsicum"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"lessThan":"p10","status":"affected","version":"15.0-RELEASE","versionType":"release"},{"lessThan":"p6","status":"affected","version":"14.4-RELEASE","versionType":"release"},{"lessThan":"p15","status":"affected","version":"14.3-RELEASE","versionType":"release"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f2fdd5ed09794a8673f36fafb0306aebb7505f075c8b25b56cf542c1343e09f3 · sha256:d1d197fb1eae4d7c… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:f2fdd5ed09794a8673f36fafb0306aebb7505f075c8b25b56cf542c1343e09f3 · sha256:d1d197fb1eae4d7c… · /containers/adp/0/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-266","description":"CWE-266: Incorrect Privilege Assignment","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f2fdd5ed09794a8673f36fafb0306aebb7505f075c8b25b56cf542c1343e09f3 · sha256:d1d197fb1eae4d7c… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:28.capsicum.asc"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f2fdd5ed09794a8673f36fafb0306aebb7505f075c8b25b56cf542c1343e09f3 · sha256:d1d197fb1eae4d7c… · /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.