Is CVE-2026-121410 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-121410 being exploited in the wild.

How severe is CVE-2026-121410?

Medium severity, with a CVSS score of 4.3, published 3 November 2026.

Is there a fix for CVE-2026-121410?

Yes: fixed in 3.32.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-121410 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-121410?

Check whether you run 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.

CVE-2026-121410: FreeRDP denial of service in RDPGFX ALPHA WIRETOSURFACE_2

CVE-2026-121410 · Severity: medium · CVSS 4.3 · Published 2026-11-03

FreeRDP is a client library for connecting to Remote Desktop Protocol servers. A malicious RDP server can send a crafted graphics command that causes the FreeRDP client to crash, terminating the user's remote desktop session. The vulnerability requires the server to be actively malicious or compromised, and the client to have graphics support enabled.

Technologies: FreeRDP. Vendors: FreeRDP.

Quick answers

Is CVE-2026-121410 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-121410 being exploited in the wild.
How severe is CVE-2026-121410?: Medium severity, with a CVSS score of 4.3, published 3 November 2026.
Which products and versions are affected?: FreeRDP before 3.32.2.
Is there a fix for CVE-2026-121410?: Yes: fixed in 3.32.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-121410 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-121410?: Check whether you run 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: 3.32.2

Technical details

The RDPGFX ALPHA WIRETOSURFACE_2 handler fails to validate surface dimensions, allowing a server to send a PDU with zero width and height. This causes either an assertion failure in verbose-assert builds or a division-by-zero error in the stream validation code (Stream_CheckAndLogRequiredLengthEx). The attack requires an established RDPGFX dynamic channel with a valid surface already created on the client.

Affected products

FreeRDP FreeRDP before 3.32.2

Timeline

2026-10-19: disclosed
2026-11-03: advisory
2026-11-03: patched

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.