CVE-2026-0959: Out-of-bounds Write in Wireshark
Published Jan 14, 2026
·Updated
IEEE 802.11 protocol dissector 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>=4.4.0<=4.4.12, >=4.6.0<=4.6.2
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
Mar 25, 58030
Event
via FIRST·06:30 PM
Frequently Asked Questions
1
What is the severity of CVE-2026-0959?
CVE-2026-0959 is classified as a high-severity vulnerability due to its potential to cause denial of service.
2
How do I fix CVE-2026-0959?
To fix CVE-2026-0959, you should upgrade to Wireshark version 4.6.3 or later, or 4.4.13 or later.
3
What types of software are affected by CVE-2026-0959?
CVE-2026-0959 impacts Wireshark versions 4.4.0 to 4.4.12 and 4.6.0 to 4.6.2.
4
What impact does CVE-2026-0959 have on Wireshark users?
CVE-2026-0959 can cause a crash in Wireshark when processing IEEE 802.11 protocol packets, leading to denial of service.
5
Is there a workaround for CVE-2026-0959?
There are no known workarounds for CVE-2026-0959; upgrading to a patched version is necessary to mitigate the vulnerability.