CVE-2026-5403

HighCVSS 7.8/10Last modified Nov 11, 2026

Description

SBC codec crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code execution

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122 CWE-787

Affected software

Vendor	Product	Versions
Wireshark Foundation	Wireshark	>= 4.6.0, < 4.6.5; >= 4.4.0, < 4.4.15
Red Hat	Red Hat Enterprise Linux 10	—
Red Hat	Red Hat Enterprise Linux 6	—
Red Hat	Red Hat Enterprise Linux 7	—
Red Hat	Red Hat Enterprise Linux 8	—
Red Hat	Red Hat Enterprise Linux 9	—

References

https://gitlab.com/wireshark/wireshark/-/issues/21103Exploit, Issue Tracking, Third Party Advisory
https://www.wireshark.org/security/wnpa-sec-2026-16.htmlVendor Advisory
https://access.redhat.com/security/cve/CVE-2026-5403
https://bugzilla.redhat.com/show_bug.cgi?id=2464271
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5403.json

Timeline

Published: May 1, 2026
Last modified: Nov 11, 2026
NVD status: Modified

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