Vulnerability · Published Dec 3, 2025 · Assigned by GitLab
CVE-2025-13945Improperly Controlled Sequential Memory Allocation in Wireshark
Medium 5.5
In plain English
A medium-severity security flaw in Wireshark from Wireshark Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 85.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
HTTP3 dissector crash in Wireshark 4.6.0 and 4.6.1 allows denial of service
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | wireshark | 4.0.17-0+deb12u2 | DEBIAN-CVE-2025-13945 |
| Debian:13 | wireshark | 4.4.13-0+deb13u1 | DEBIAN-CVE-2025-13945 |
| Debian:13 | wireshark | 4.4.13-0+deb13u1 | DSA-6124-1 |
| Debian:14 | wireshark | 4.6.2-1 | DEBIAN-CVE-2025-13945 |
| Ubuntu:24.04:LTS | wireshark | no fix listed | UBUNTU-CVE-2025-13945 |
| Ubuntu:25.10 | wireshark | no fix listed | UBUNTU-CVE-2025-13945 |
| Ubuntu:26.04:LTS | wireshark | no fix listed | UBUNTU-CVE-2025-13945 |
| Ubuntu:26.10 | wireshark | no fix listed | UBUNTU-CVE-2025-13945 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wireshark Foundation | Wireshark | 4.6.0 – before 4.6.1 |
Weakness: CWE-1325 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://www.wireshark.org/security/wnpa-sec-2025-07.html
- GitLab Issue #20860 issue-tracking, permissions-required