High 7.8Published Apr 30, 2026

CVE-2026-7270An 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.

Updated under an hour ago (2026-10-19 10:23 UTC)

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It affects freebsd. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-783
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

freebsd freebsd freebsd:freebsd	13.5; 13.5; 13.5; 13.5; 13.5; 13.5; 13.5; 13.5; and 29 more ranges	NVD

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:13.exec.ascvendor-advisory
https://blog.calif.io/p/cve-2026-7270-how-i-get-root-on-freebsd
https://news.ycombinator.com/item?id=48077971

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.