What is CVE-2026-49417?

CVE-2026-49417 is a high-severity vulnerability in Freebsd, classified under Use After Free. CVSS score: 7.0/10. Published 2026-06-27.

How severe is CVE-2026-49417?

High severity. CVSS v3 base score is 7.0 out of 10.

Is CVE-2026-49417 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Freebsd

CVE-2026-49417

Second, the audio buffer backing a mapping could be freed when the device was closed even though the mapping remained valid. The freed memory could then be reused elsewhere while still accessible through the stale mapping. The /dev/dsp d…

Vulnerability class: Use-After-Free

EPSS: 0.001 (2.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/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-416 — Use After Free

Public proof-of-concept exploits

Yayoi-cs/CVE-2026-49417_1day_LPE_exploit

References

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

Frequently asked questions

What is CVE-2026-49417?: CVE-2026-49417 is a high-severity vulnerability in Freebsd, classified under Use After Free. CVSS score: 7.0/10. Published 2026-06-27.
How severe is CVE-2026-49417?: High severity. CVSS v3 base score is 7.0 out of 10.
Is CVE-2026-49417 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.