[UPDATE] [high] FreeBSD Project FreeBSD OS: Multiple Vulnerabilities
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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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1871
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-452570.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-108460.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-452560.09% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-452580.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-452590.09% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-494120.10% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-494130.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-494140.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-494160.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-494170.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-45257 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-10846 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-45256 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-45258 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-45259 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-49412 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-49413 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-49414 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-49416 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-49417 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- highCVE-2026-49416: The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large…nvd
- highCVE-2026-49414: The ELF image activator cleared per-process ASLR preference flags for setuid binaries after th…nvd
- highCVE-2026-49417: Second, the audio buffer backing a mapping could be freed when the device was closed even thou…nvd
- highCVE-2026-49413: The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_…nvd
- highCVE-2026-49412: The kernel handler for IPV6_MSFILTER dropped a serializing lock in order to copy the source-fi…nvd
- mediumCVE-2026-45259: sigqueue(2) was marked as permitted in capability mode with the introduction of Capsicum in 20…nvd
- highCVE-2026-45258: dsp_mmap_single() validated the requested mapping by checking the sum of the user-supplied off…nvd
- highCVE-2026-45257: The KTLS receive path decrypted each record in place, assuming that the mbufs holding received…nvd
- mediumCVE-2026-45256: When used to deliver a signal to a specific thread, thr_kill2(2) called p_cansignal() to deter…nvd
- unknownCVE-2026-10846: Insufficient verification that responses belong to a querymsrc
Recent advisories for FreeBSD Project FreeBSD OS
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] FreeBSD Project FreeBSD OS: Multiple vulnerabilitiescert-bund · 2026-07-30
- medium[NEW] [medium] FreeBSD Project FreeBSD OS: Multiple vulnerabilitiescert-bund · 2026-07-01
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