CVE-2026-45256
A local attacker can exploit multiple vulnerabilities in FreeBSD Project FreeBSD OS to gain elevated privileges – possibly even administrator rights –, bypass security measures, disclose confidential information, manipulate data, or perform other unspecified attacks.
CSIRTS triage
- What
- Multiple vulnerabilities in FreeBSD OS allow local attackers to gain elevated or administrator privileges, bypass security measures, disclose confidential information, and manipulate data.
- Who is affected
- Local users on FreeBSD systems running vulnerable versions.
- Urgency
- High severity due to privilege escalation and local attack vector; prompt updates needed.
- Action
- Apply FreeBSD security updates for the reported CVEs.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[UPDATE] [high] FreeBSD Project FreeBSD OS: Multiple Vulnerabilitiescert-bund · 2026-08-13
- mediumCVE-2026-45256: When used to deliver a signal to a specific thread, thr_kill2(2) called p_cansignal() to deter…nvd · 2026-06-26
External references
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[](https://www.csirts.com/cve/CVE-2026-45256)