Vulnerability in FreeBSD
CVE-2026-7270
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- FreeBSD — versions 14.3, 13.5, 15.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.freebsd.org/advisories/FreeBSD-SA-26:13.exec.asc (vendor-advisory, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-7270?
- CVE-2026-7270 is a high-severity vulnerability in FreeBSD, classified under CWE-783. CVSS score: 7.8/10. Published 2026-04-30.
- How severe is CVE-2026-7270?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2026-7270 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.