Signal is active with 3 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
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 by sending SIGKILL or SIGSTOP. This could be any process running as the same user, or any process, for a superuser sandboxed process.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
3 versions affected across 1 product
CVE-2026-45259 Capability Mode Bypass in FreeBSD Capsicum sigqueue Implementation https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-45259
Post summary
The snippet announces CVE‑2026‑45259, highlighting a capability mode bypass in the FreeBSD Capsicum sigqueue implementation, without providing PoC, exploit, or patch details.
🚨*CVE* 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… https://www.cve.org/CVERecord?id=CVE-2026-45259 ----- Traducción: CVE-2026-45259 sig… http://infoflow.cloud`
Post summary
The post shares a brief technical summary of CVE‑2026‑45259, noting a missing capability in kern_sigqueue under Capsicum, but does not include PoC, exploit code, or patch information.
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… https://www.cve.org/CVERecord?id=CVE-2026-45259
Post summary
The snippet references the CVE record for CVE‑2026‑45259, confirming a capability‑mode issue in kern_sigqueue and providing technical detail, but it does not indicate exploitation, patching, or a PoC.
31 of 31 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.3 | - | - |
| OS | freebsd | freebsd | 14.4 | - | - |
| OS | freebsd | freebsd | 14.4 | - | - |
| OS | freebsd | freebsd | 14.4 | - | - |
| OS | freebsd | freebsd | 14.4 | - | - |
| OS | freebsd | freebsd | 14.4 | - | - |
| OS | freebsd | freebsd | 14.4 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |
| OS | freebsd | freebsd | 15.0 | - | - |