CVE-2026-49416
highpriority · track · 0EPSS 0.002 · 4 %ileDEEURUUSEPSS · scored 2026-10-23
The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of the allocation. An unprivileged local user with access to a vt(4) device can trigger an out-of-bounds write in the kernel, potentially escalating privileges.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (24)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1871FreeBSD Project FreeBSD OS: Mehrere SchwachstellenDeutsch2026-06-09csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in FreeBSD Project FreeBSD OS ausnutzen, um erweiterte Rechte zu erlangen – möglicherweise sogar Administratorrechte –, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren oder andere, nicht näher definierte Angriffe durchzuführen.
also known as (4)
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sources
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references (3)
External citations — patches, advisories, analysis.
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