Description
FreeRDP before 3.32.2 contains a memory allocation vulnerability in rdg_receive_packet that allows a malicious RD Gateway to force a 2 GiB client allocation before tunnel authentication. Attackers can send an eight-byte RDG header declaring packet length 0x7FFFFFFF to trigger pre-authentication memory exhaustion and denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.32.2 | 3.32.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | freerdp3 | 3.32.2+dfsg-1 | — |
| Debian 13 | freerdp3 | No fix yet | — |
| Debian 12 | freerdp2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | freerdp3 | 3.32.2+dfsg-0ubuntu0.26.10.1 | USN-9007-1 |
| Ubuntu 26.04 LTS | freerdp3 | 3.32.2+dfsg-0ubuntu0.26.04.1 | USN-9007-1 |
| Ubuntu 24.04 LTS | freerdp3 | 3.32.2+dfsg-0ubuntu0.24.04.1 | USN-9007-1 |
| Ubuntu 22.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu 18.04 LTS | freerdp | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | freerdp | No fix yet | — |
| Ubuntu Pro 24.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | freerdp2 | No fix yet | — |
Advisories 2
- WID-SEC-2026-4039 FreeRDP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- USN-9007-1 freerdp3 vulnerabilities Ubuntu Security Notices (USN) · Nov 10, 2026
References
- GitHub Security Advisory (GHSA-4vh4-3pc3-32p7) vendor-advisory
- VulnCheck Advisory: FreeRDP before 3.32.2 Memory Exhaustion via RD Gateway Packet Length third-party-advisory