CVE-2026-96423CWE-122CWE-125

CVE-2026-96423

Medium · published September 29, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
2.6
In the wild
Unconfirmed
What it is

X11 protocol dissector crash in 4.6.0 to 4.6.8 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
0.00133 · 2.6th percentile
Weaknesses
CWE-122 · Heap-based Buffer Overflow; CWE-125 · Out-of-bounds Read
Published
2026-09-29T14:17Z
Affected products (2)
ProductVersionsFixed in
wireshark/wireshark≥ 4.4.0, < 4.4.194.4.19
wireshark/wireshark≥ 4.6.0, < 4.6.94.6.9
References (3)
https://gitlab.com/wireshark/wireshark/-/work_items/21563 · [email protected]https://www.wireshark.org/security/wnpa-sec-2026-108.html · [email protected]https://gitlab.com/wireshark/wireshark/-/work_items/21563 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 30 SEP 03:29Z
    EPSS moved — → 0%
    epss
  • 29 SEP 09:30Z
    Heap-based Buffer Overflow in Wireshark
    cvelistv5