CVE-2026-67302
Description
A flaw was found in FreeRDP, a remote desktop protocol client. A malicious or compromised RDP server can exploit this vulnerability by sending a specially crafted StartStreamsRequest with a zero value for FrameRateDenominator. If camera redirection is enabled on the client, this action triggers a divide-by-zero error, causing the FreeRDP client process to terminate and resulting in a denial of service for the user.
Statement
This vulnerability in FreeRDP affects clients with camera redirection enabled. A malicious RDP server could send a crafted StartStreamsRequest PDU, leading to a divide-by-zero error and client process termination, resulting in a denial of service. Exploitation requires user interaction to connect to a compromised server with the vulnerable feature active.
Mitigation
To mitigate this issue, disable camera redirection when connecting to untrusted RDP servers. This can be achieved by using the --disable-camera option with the xfreerdp client or by configuring FreeRDP to not enable camera redirection. Disabling this feature will prevent the use of camera redirection functionality.
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 | 4.3 | N/A | 4.3 |
| Attack Vector | Network | N/A | Network |
| 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 | Low | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Crash, Exit, or Restart
A Divide by Zero results in a crash.
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