CVE-2026-45259 medium vulnerability summary
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...
CVE-2026-45259 is a Medium severity vulnerability notice that security teams should triage for exposure in their own environments.
What to review
The affected area appears to involve sigqueue(2) was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the implementation. Administrators should compare this notice against their asset inventory, dependency list, and externally exposed services.
Recommended action
Confirm whether the affected product or library is present, review vendor guidance, prioritize patching based on internet exposure and severity, and monitor logs for suspicious behavior tied to the affected component.
This brief is based on information from Tenable Newest CVEs . Please refer to the original source for the complete advisory and vendor-specific guidance.
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