CVE-2026-7270
Local privilege escalation via execve()
7.8CVSSHIGH
Description
An operator precedence bug in the kernel results in a scenario where a buffer overflow causes attacker-controlled data to overwrite adjacent execve(2) argument buffers. The bug may be exploitable by an unprivileged user to obtain superuser privileges.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
Exploitability
Official Patch Available
References
https://www.freebsd.org/security/advisories/FreeBSD-SA-26:13.exec.asc
freebsd.org
https://news.ycombinator.com/item?id=48077971
news.ycombinator.com
https://blog.calif.io/p/cve-2026-7270-how-i-get-root-on-freebsd
blog.calif.io
and 5 more references View all →
Timeline
Published
Apr 30, 2026
Last Updated
May 10, 2026
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