CVE-2026-56297
HIGHDescription
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.
Is your site exposed to CVE-2026-56297?
Run a free security scan — no signup, results in seconds.
CVSS v3.1 Score
EPSS — Exploit Prediction
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
Weakness Type (CWE)
Affected Products
| Vendor | Product |
|---|---|
| freerdp | freerdp |
References
Advisories & Patches
Exploits
Frequently Asked Questions
What is CVE-2026-56297? +
How severe is CVE-2026-56297? +
What products are affected by CVE-2026-56297? +
How do I check if I'm vulnerable to CVE-2026-56297? +
Related Vulnerabilities
OwnTone Server versions 28.4 through 29.0 contain a race condition vulnerability in the DAAP login handler that allows unauthenticated attackers …
An authentication bypass security issue exists within FactoryTalk Historian Site Edition. By continually sending requests to the login endpoint, an …
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in HYPR Passwordless on Windows allows Privilege Escalation.This issue …
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Angular uses a …
go-tuf is a Go implementation of The Update Framework (TUF). The go-tuf client inconsistently traces the delegations. For example, if …
node-tar is a Tar for Node.js. In 7.5.1, using .t (aka .list) with { sync: true } to read tar …