# CVE-2026-114041: FreeRDP heap out-of-bounds read in RD Gateway message handler

Source: https://junglewise.ai/threats/cve-2026-114041-freerdp-before-3-32-1-on-windows-contains-a-heap-out-of-bounds  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-114041 · Severity: medium · CVSS 6.5 · Published 2026-10-21

FreeRDP is a remote desktop protocol client that allows users to connect to Windows servers. A flaw in the Windows build causes it to read twice the intended buffer size when processing pre-authentication messages from an RD Gateway server, potentially leaking sensitive heap memory or crashing the client. A remote attacker controlling the gateway server can exploit this without user interaction or authentication.

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-2026-114041 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-114041 being exploited in the wild.

**How severe is CVE-2026-114041?** Medium severity, with a CVSS score of 6.5, published 21 October 2026.

**Which products and versions are affected?** FreeRDP Project FreeRDP before 3.32.1, Windows builds only.

**Is there a fix for CVE-2026-114041?** Yes: fixed in 3.32.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-114041 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-114041?** 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 3.32.1

## Technical details

The vulnerability is a heap out-of-bounds read in client_cli_present_gateway_message() on Windows, where a byte count is incorrectly passed as a wide-character printf precision. MSVC's %.*S format specifier interprets precision as a WCHAR count, causing it to read double the intended buffer size. The flaw occurs during RD Gateway tunnel setup when processing pre-authentication consent or service messages. A malicious gateway can leak heap memory or trigger a denial of service.

## Affected products

- FreeRDP Project FreeRDP before 3.32.1, Windows builds only

## Timeline

- 2026-10-05: disclosed
- 2026-10-20: advisory

## References

- [https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-c49c-xm94-5qf3](https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-c49c-xm94-5qf3)
- [https://www.vulncheck.com/advisories/freerdp-before-3.32.1-heap-out-of-bounds-read-via-rd-gateway-consent-message](https://www.vulncheck.com/advisories/freerdp-before-3.32.1-heap-out-of-bounds-read-via-rd-gateway-consent-message)

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