CVE-2026-0959
Description
A flaw was found in Wireshark. A remote attacker could exploit a crash in the IEEE 802.11 protocol dissector by crafting a malicious network packet. This vulnerability leads to a denial of service, making the Wireshark application unavailable.
Statement
This vulnerability is rated Moderate for Red Hat. An out-of-bounds write flaw in the IEEE 802.11 protocol dissector of Wireshark can lead to a denial of service. Exploitation requires user interaction, as a malicious packet capture file must be opened, and has high attack complexity, limiting the overall impact.
Mitigation
To mitigate this issue, users should avoid opening untrusted or suspicious packet capture files with Wireshark. Limiting the use of Wireshark to trusted environments and only processing network traffic from known sources can reduce the risk of exploitation.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.3 | 6.5 | 5.3 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | High | Low | High |
| Privileges Required | None | None | None |
| User Interaction | Required | Required | Required |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | None | None | None |
| Integrity Impact | None | None | None |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
