CVE-2026-0961: Out-of-bounds Write in Wireshark
Published Jan 14, 2026
·Updated
BLF file parser crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service
Affected Software
3 affected components
Wireshark Wireshark>=4.6.0<4.6.2, >=4.4.0<=4.4.12
Wireshark Wireshark>=4.4.0<4.4.13
Wireshark Wireshark>=4.6.0<4.6.3
Remediation
Information
Upgrade to version 4.6.3 or above
Event History
Jan 14, 2026
CVE Published
via MITRE·08:23 PM
Data Sourced
via MITRE·08:23 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·09:15 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-0961?
CVE-2026-0961 is classified as a denial of service vulnerability due to an out-of-bounds write in the Wireshark BLF file parser.
2
How do I fix CVE-2026-0961?
To fix CVE-2026-0961, upgrade Wireshark to version 4.6.3 or later if you are using versions 4.6.0 to 4.6.2 or 4.4.0 to 4.4.12.
3
What versions of Wireshark are affected by CVE-2026-0961?
CVE-2026-0961 affects Wireshark versions 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12.
4
Can CVE-2026-0961 lead to data loss?
CVE-2026-0961 itself does not lead to data loss but can cause the application to crash, resulting in potential disruption of service.
5
What types of attacks are associated with CVE-2026-0961?
CVE-2026-0961 can be leveraged by an attacker to conduct denial of service attacks against the Wireshark application.