Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, rdpsnd_server_recv_formats in channels/rdpsnd/server/rdpsnd_main.c frees context->client_formats on a malformed Client Audio Formats PDU without clearing the owning pointer or num_client_formats. An authenticated RDP client can trigger an error such as a cbSize larger than the remaining record, leave the dangling pointer in the server context, and cause rdpsnd_server_context_free to free the same allocation again at session teardown. This reliably terminates the server and can create allocator-dependent heap corruption. This issue is fixed in version 3.28.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.28.0 | — |
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 | 3.28.0+dfsg-1 | — |
| Debian 13 | freerdp3 | No fix yet | — |
| Debian 12 | freerdp2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.26.04.1 | — |
| Ubuntu 24.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.24.04.1 | — |
| Ubuntu 22.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu 18.04 LTS | freerdp | No fix yet | — |
| Ubuntu 16.04 LTS | freerdp | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | freerdp +5 | 2:3.10.3-12.el10_2.10 | RHSA-2026:61378 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | freerdp +5 | 2:3.10.3-3.el10_0.16 | RHSA-2026:68706 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | freerdp +5 | 2:3.10.3-12.el10_2.10 | ALSA-2026:61378 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | freerdp | 2:3.10.3-12.el10_2.10 | RLSA-2026:61378 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | freerdp | 3.30.0-1.1 | openSUSE-SU-2026:11385-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | freerdp +5 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 |
| Amazon Linux 2 | freerdp +4 | 2:2.11.7-1.amzn2.0.15 | ALAS2-2026-3906 |
Advisories 8
- RHSA-2026:68706 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:61378 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- ALSA-2026:61378 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2209 FreeRDP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 28, 2026
- ALAS2023-2026-2142 Important: freerdp security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 21, 2026
- ALAS2-2026-3906 Moderate: freerdp security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 14, 2026
- RLSA-2026:61378 Important: freerdp security update Rocky Linux Security Advisories · Sep 1, 2026
- openSUSE-SU-2026:11385-1 freerdp-3.30.0-1.1 on GA media SUSE / openSUSE Security Updates · Jul 29, 2026