CVE-2026-76921CWE-416

CVE-2026-76921

Medium · published August 20, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
4.3
In the wild
Unconfirmed
What it is

CMS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00155 · 4.3th percentile
Weakness
CWE-416 · Use After Free
Published
2026-08-20T03:16Z
Affected products (2)
ProductVersionsFixed in
wireshark/wireshark≥ 4.4.0, < 4.4.184.4.18
wireshark/wireshark≥ 4.6.0, < 4.6.84.6.8
References (3)
https://gitlab.com/wireshark/wireshark/-/work_items/21457 · [email protected]https://gitlab.com/wireshark/wireshark/-/work_items/21458 · [email protected]https://www.wireshark.org/security/wnpa-sec-2026-83.html · [email protected]
EPSS history
Timeline
  • 19 AUG 22:45Z
    Use After Free in Wireshark
    cvelistv5