CVE-2026-6526
Description
A flaw was found in Wireshark, a network protocol analyzer. By processing a specially crafted Real-Time Streaming Protocol (RTSP) packet, a remote attacker could cause the Wireshark application to crash, leading to a denial of service. This vulnerability affects the RTSP protocol dissector.
Mitigation
Users can reduce exposure by avoiding the analysis of untrusted network capture files or live network traffic from untrusted sources. To specifically prevent the vulnerable RTSP dissector from processing packets, it can be disabled within Wireshark's preferences. Navigate to 'Analyze' -> 'Enabled Protocols...' and uncheck the 'RTSP' protocol. Disabling this protocol may impact the ability to analyze legitimate RTSP traffic.
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 | 6.5 | N/A | 5.5 |
| Attack Vector | Network | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | Required |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: 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:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An attacker that can trigger an assert statement can still lead to a denial of service if the relevant code can be triggered by an attacker, and if the scope of the assert() extends beyond the attacker's own session.
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