CVE-2026-76886CWE-122

CVE-2026-76886

High · published August 20, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
31.0
In the wild
Unconfirmed
What it is

C12.22 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
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00382 · 31.0th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
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/21439 · [email protected]https://www.wireshark.org/security/wnpa-sec-2026-75.html · [email protected]https://gitlab.com/wireshark/wireshark/-/work_items/21446 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 19 AUG 22:35Z
    Heap-based Buffer Overflow in Wireshark
    cvelistv5