CVE-2026-56297
Last modified
CVE-2026-56297 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. FreeRDP before 3.22.0 contains a use-after-free vulnerability in dvcman_channel_close and dvcman_call_on_receive due to improper synchronization of channel_callback access. A malicious RDP server can trigger a race condition by sending DYNVC_DATA and DYNVC_CLOSE messages concurrently, causing heap-use-after-free in the drdynvc client thread and potentially enabling remote code execution or denial of service.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
FreeRDP before 3.22.0 contains a use-after-free vulnerability in dvcman_channel_close and dvcman_call_on_receive due to improper synchronization of channel_callback access. A malicious RDP server can trigger a race condition by sending DYNVC_DATA and DYNVC_CLOSE messages concurrently, causing heap-use-after-free in the drdynvc client thread and potentially enabling remote code execution or denial of service.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Freerdp | Freerdp | < 3.22.0 |
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3mv2-5q57-2v8hExploit, Vendor Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3mv2-5q57-2v8hExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
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