Vulnerability · Published Oct 21, 2026 · Assigned by VulnCheck
CVE-2026-114043Vulnerability in FreeRDP
Medium 6.5
In plain English
A medium-severity out-of-bounds read in FreeRDP from FreeRDP. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | freerdp2 | no fix listed | DEBIAN-CVE-2026-114043 |
| Debian:13 | freerdp3 | no fix listed | DEBIAN-CVE-2026-114043 |
| Debian:14 | freerdp3 | 3.32.1+dfsg-1 | DEBIAN-CVE-2026-114043 |
| Ubuntu:22.04:LTS | freerdp2 | no fix listed | UBUNTU-CVE-2026-114043 |
| Ubuntu:24.04:LTS | freerdp3 | 3.32.1+dfsg-0ubuntu0.24.04.1 | UBUNTU-CVE-2026-114043 |
| Ubuntu:26.04:LTS | freerdp3 | 3.32.1+dfsg-0ubuntu0.26.04.1 | UBUNTU-CVE-2026-114043 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References
- GitHub Security Advisory (GHSA-f3vg-h45x-6wgf) vendor-advisory
- VulnCheck Advisory: Vulnerability in FreeRDP third-party-advisory