Buffer overflow in Freebsd
CVE-2026-45250
The setcred(2) system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first v…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (0.7th percentile) — read the EPSS interpretation.
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.
Affected products
- Freebsd — versions 14.3, 15.0, 14.4-RELEASE
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secteam@freebsd.org (vendor-advisory, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-45250?
- CVE-2026-45250 is a high-severity vulnerability in Freebsd, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-05-21.
- How severe is CVE-2026-45250?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2026-45250 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.