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

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gitlab.com/wireshark/wireshark/-/issues/21090	Exploit Issue Tracking
https://www.wireshark.org/security/wnpa-sec-2026-14.html	Vendor Advisory
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

Configurations

Configuration 1 (hide)

cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-30 07:16

Updated : 2026-07-15 01:16

NVD link : CVE-2026-5402

Mitre link : CVE-2026-5402

CVE.ORG link : CVE-2026-5402

JSON object : View

Products Affected

wireshark

wireshark

CWE

CWE-122

Heap-based Buffer Overflow

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