CVE-2026-5402

TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitLabCNA
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
wiresharkwireshark
4.6.0 ≤
𝑥
< 4.6.5
CNA
Common Weakness Enumeration
References
https://gitlab.com/wireshark/wireshark/-/issues/21090
https://www.wireshark.org/security/wnpa-sec-2026-14.html