What’s Vulnerable › Vulnerabilities

CVE-2025-13945: Improperly Controlled Sequential Memory Allocation in Wireshark

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-03 · updated 2026-06-17
• Weakness: CWE-1325

Description

HTTP3 dissector crash in Wireshark 4.6.0 and 4.6.1 allows denial of service

Affected products

• Wireshark Foundation Wireshark: from 4.6.0 before 4.6.2 — fixed in 4.6.2

How to fix

Upgrade to a fixed version: Wireshark Foundation Wireshark 4.6.2. Check the vendor advisory for mitigations.

References

• https://gitlab.com/wireshark/wireshark/-/issues/20860
• https://www.wireshark.org/security/wnpa-sec-2025-07.html

Get alerted when CVE-2025-13945 or the next vulnerability affects your stack