What is CVE-2025-13499?

CVE-2025-13499 is a high-severity vulnerability in Wireshark, classified under Access of Uninitialized Pointer. CVSS score: 7.8/10. Published 2025-11-21.

How severe is CVE-2025-13499?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Wireshark

CVE-2025-13499

Kafka dissector crash in Wireshark 4.6.0 and 4.4.0 to 4.4.10 allows denial of service

Published 2025-11-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (1.5th percentile), scored 2026-09-28.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: -0.000

Affected products

Wireshark — versions 4.6.0
Wireshark Foundation — versions 4.6.0, 4.4.0

Weakness classification (CWE)

CWE-824 — Access of Uninitialized Pointer

References

www.wireshark.org/security/wnpa-sec-2025-06.html (Vendor Advisory)
gitlab.com/wireshark/wireshark/-/issues/20823 (issue-tracking, permissions-required, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2025-13499?: CVE-2025-13499 is a high-severity vulnerability in Wireshark, classified under Access of Uninitialized Pointer. CVSS score: 7.8/10. Published 2025-11-21.
How severe is CVE-2025-13499?: High severity. CVSS v3 base score is 7.8 out of 10.