CVE-2026-5404CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Wireshark

Medium · published April 30, 2026

CVSS v3.1
4.7
EPSS
0%
Percentile
2.8
In the wild
Unconfirmed
What it is

K12 RF5 file parser crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00136 · 2.8th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-04-30T23:04Z
EPSS history
Timeline
  • 30 APR 23:04Z
    Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Wireshark
    cvelistv5