CVE-2026-114043
FreeRDP before 3.32.1 contains a heap-based out-of-bounds read in WinPR's clipboard PNG-to-CF_DIB synthesis because winpr_read_png_from_buffer() allocates a bit-packed buffer for PNGs with bit depth below 8, while winpr_bitmap_write_buffer() copies rows assuming one byte per pixel. A malicious RDP server can send a crafted low-bit-depth PNG clipboard payload that, when pasted by the victim, discloses megabytes of heap memory.
- Score
- CVSS 4.0 7.1 High
- Status
- Awaiting Analysis - disclosure@vulncheck.com
- Published
- 2026-10-21
- Last modified
- 2026-10-27
- Weaknesses
- CWE-125
Affected products
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f3vg-h45x-6wgf
- https://www.vulncheck.com/advisories/vulnerability-in-freerdp
