What is CVE-2026-45252?

CVE-2026-45252 is a medium-severity vulnerability in Freebsd, classified under Heap-based Buffer Overflow. CVSS score: 5.5/10. Published 2026-05-21.

How severe is CVE-2026-45252?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Freebsd

CVE-2026-45252

When a fusefs file system implements extended attributes, the kernel may send a FUSE_LISTXATTR message to the userspace daemon to retrieve the list of extended attributes for a given file. The FUSE protocol requires the daemon to return a…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (19.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H.

Affected products

Freebsd — versions 14.3, 15.0, 14.4-RELEASE

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

secteam@freebsd.org (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-45252?: CVE-2026-45252 is a medium-severity vulnerability in Freebsd, classified under Heap-based Buffer Overflow. CVSS score: 5.5/10. Published 2026-05-21.
How severe is CVE-2026-45252?: Medium severity. CVSS v3 base score is 5.5 out of 10.