CVE-2026-44421
EUVD-2026-3343329.05.2026, 20:16
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client by sending crafted RDPGFX PDUs. The bug is in gdi_CacheToSurface: it validates a destination rectangle that is clamped to UINT16_MAX, but then performs the copy using the original cacheEntry->width/height. This can cause a large out-of-bounds heap write and may lead to client crashes or code execution. This bug is reachable from a malicious RDP server, but only when the client has RDPGFX enabled. This vulnerability is fixed in 3.26.0.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| freerdp | freerdp | 𝑥 < 3.26.0 |
𝑥
= Vulnerable software versions
Debian Releases
Amazon Linux Releases
Amazon Package | |||||
|---|---|---|---|---|---|
| freerdp |
| ||||
| freerdp-debuginfo |
| ||||
| freerdp-debugsource |
| ||||
| freerdp-devel |
| ||||
| freerdp-libs |
| ||||
| freerdp-libs-debuginfo |
| ||||
| freerdp-server |
| ||||
| freerdp-server-debuginfo |
| ||||
| libwinpr |
| ||||
| libwinpr-debuginfo |
| ||||
| libwinpr-devel |
|
Common Weakness Enumeration
- CWE-122 - Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-787 - Out-of-bounds WriteThe software writes data past the end, or before the beginning, of the intended buffer.
References