high8.8
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
Impact
TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Wireshark | Wireshark | from 4.6.0 through 4.6.4 |
Weakness classification
References
- NVD record
- CVE.org record
- https://gitlab.com/wireshark/wireshark/-/issues/21090
- https://www.wireshark.org/security/wnpa-sec-2026-14.html
- https://access.redhat.com/security/cve/CVE-2026-5402
- https://bugzilla.redhat.com/show_bug.cgi?id=2464038
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5402.json