What is CVE-2026-49416?

CVE-2026-49416 is a high-severity vulnerability in Freebsd, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2026-06-27.

How severe is CVE-2026-49416?

High severity. CVSS v3 base score is 7.8 out of 10.

Integer overflow in Freebsd

CVE-2026-49416

The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initializati…

Vulnerability class: Integer Overflow

EPSS: 0.001 (1.3th 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)

CWE-190 — Integer Overflow or Wraparound

References

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

Frequently asked questions

What is CVE-2026-49416?: CVE-2026-49416 is a high-severity vulnerability in Freebsd, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2026-06-27.
How severe is CVE-2026-49416?: High severity. CVSS v3 base score is 7.8 out of 10.