CVE-2026-5657: Double Free in Wireshark
Published Apr 30, 2026
·Updated
iLBC codec crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Affected Software
3 affected components
Wireshark Wireshark>=4.6.0<=4.6.4, >=4.4.0<=4.4.14
Wireshark Wireshark>=4.4.0<=4.4.14
Wireshark Wireshark>=4.6.0<=4.6.4
Remediation
Information
Upgrade to version 4.6.5 or above
Event History
Apr 30, 2026
CVE Published
via MITRE·05:38 AM
Data Sourced
via MITRE·05:38 AM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·07:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-5657?
The severity of CVE-2026-5657 is classified as high due to its potential to cause denial of service.
2
How do I fix CVE-2026-5657?
To fix CVE-2026-5657, update Wireshark to version 4.6.5 or later if you are using versions 4.6.0 to 4.6.4, or to version 4.4.15 or later for versions 4.4.0 to 4.4.14.
3
What software is affected by CVE-2026-5657?
CVE-2026-5657 affects Wireshark versions 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14.
4
What does CVE-2026-5657 exploit?
CVE-2026-5657 exploits a double free vulnerability in the iLBC codec within Wireshark.
5
What impact does CVE-2026-5657 have on Wireshark users?
The impact of CVE-2026-5657 is a crash in Wireshark, leading to a denial of service for users.