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CVE-2026-109951 Details
Description
FreeRDP 3.17.1 before 3.32.0 contains a heap buffer over-read vulnerability in DynvcTrackerHandleCreateBack of the freerdp-proxy DRDYNVC channel handler that allows malicious backend RDP servers to read heap memory out of bounds. Attackers can send a CREATE_REQUEST_PDU whose channel name lacks a NUL byte, causing an unbounded snprintf read that leaks memory into proxy logs or crashes the process.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Oct 18, 2026Exploitation: PocAutomatable: YesTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-g4wg-67xq-8q53 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-g4wg-67xq-8q53 | [email protected] | ExploitVendor Advisory |
| https://www.vulncheck.com/advisories/freerdp-3.17.1-before-3.32.0-heap-buffer-over-read-via-proxy-drdynvc-channel-name | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| freerdp freerdp | >= 3.17.1, < 3.32.0 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 21, 2026 | Initial Analysis | [email protected] |
| Oct 18, 2026 | CVE Modified | CISA-ADP |
| Oct 13, 2026 | New CVE Received | [email protected] |