CVE-2026-6536
mediumDLMS/COSEM protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4
Vendor / product: Wireshark — wireshark
DLMS/COSEM protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4
CVSS
5.5
5.5 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (cve@gitlab.com)
Timeline (UTC)
Published: 2026-04-30 07:16
Modified: 2026-11-11 21:10
NVD status: Analyzed
Last synced 5 hours ago
Verified against the source API 2026-11-11 21:11 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
wireshark / wireshark ≥4.6.0 ≤4.6.4
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://www.wireshark.org/security/wnpa-sec-2026-25.html
References
- https://gitlab.com/wireshark/wireshark/-/issues/21065 cve@gitlab.com
- https://www.wireshark.org/security/wnpa-sec-2026-25.html cve@gitlab.com
- https://gitlab.com/wireshark/wireshark/-/work_items/21065 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-11-11 21:11 UTC · record ↗