# CVE-2026-111382: FreeRDP heap out-of-bounds write in AVC444 YUV444 combine

Source: https://junglewise.ai/threats/cve-2026-111382-freerdp-before-3-32-0-contains-a-client-side-heap-out-of-bounds  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-16. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-111382 · Severity: high · CVSS 8.8 · Published 2026-10-16

FreeRDP is open-source remote desktop software used to connect to Windows and Linux systems. A malicious RDP server can send specially crafted video frames that cause FreeRDP clients to write data past the end of allocated memory, corrupting the heap and potentially executing arbitrary code on the user's machine. This requires the attacker to control the RDP server and the victim to connect to it.

Technologies: [FreeRDP Project FreeRDP](https://junglewise.ai/threats/technologies/freerdp-project-freerdp). Vendors: [FreeRDP Project](https://junglewise.ai/threats/vendors/freerdp-project).

## Quick answers

**Is CVE-2026-111382 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-111382 being exploited in the wild.

**How severe is CVE-2026-111382?** High severity, with a CVSS score of 8.8, published 16 October 2026.

**Which products and versions are affected?** FreeRDP Project FreeRDP before 3.32.0.

**Is there a fix for CVE-2026-111382?** Yes: fixed in 3.32.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-111382 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-111382?** Check whether you run FreeRDP Project FreeRDP at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 3.32.0

## Technical details

Client-side heap out-of-bounds write vulnerability (CWE-787) in the AVC444/AVC444v2 YUV444 chroma-combine functions general_LumaToYUV444 and general_ChromaV2ToYUV444. A malicious RDP server sends RDPGFX frames with odd-height region rectangles whose bottom boundary equals the surface height, causing the combine loop to write one full row past the tightly-allocated U and V planes. The vulnerability affects the general, SSE4.1, and NEON backend implementations.

## Affected products

- FreeRDP Project FreeRDP before 3.32.0

## Timeline

- 2026-10-01: disclosed
- 2026-10-16: advisory
- 2026-10-16: patched: version 3.32.0 released

## References

- [https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f4pf-pgp4-f2r3](https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f4pf-pgp4-f2r3)
- [https://www.vulncheck.com/advisories/freerdp-before-3.32.0-heap-out-of-bounds-write-in-avc444-yuv444-combine](https://www.vulncheck.com/advisories/freerdp-before-3.32.0-heap-out-of-bounds-write-in-avc444-yuv444-combine)

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- [FreeRDP NULL pointer dereference in RDPGFX ResetGraphics](https://junglewise.ai/threats/cve-2026-121402-freerdp-before-3-32-2-contains-a-null-pointer-dereference)