CVE-2026-109943
FreeRDP 3.29.0 before 3.32.0 Double Free via Async-Update Polygon Order
- State
- Published
- Severity
- 7.1 High
- Published
- Oct 13, 2026
- Updated
- Oct 14, 2026
- Reserved
- Oct 13, 2026
Description
FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's async-update message proxy, which shallow-copies the parser-owned PolygonSC or PolygonCB points array when numPoints is zero, so both the queue consumer and parser cleanup free it. A malicious RDP server can send a point-bearing polygon order followed by a zero-point order to crash a client with +async-update enabled.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-415 Double Free
Affected Products
| Product | Versions |
|---|---|
FreeRDPFreeRDP |
|
References
- GitHub Security Advisory (GHSA-pg3f-chj4-mrw6)vendor-advisory
- VulnCheck Advisory: FreeRDP 3.29.0 before 3.32.0 Double Free via Async-Update Polygon Orderthird-party-advisory
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