Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled max_xmit_frag value in libfreerdp/core/gateway/rpc_bind.c without bounding it to the 4088-byte ReceiveFragment allocation. A malicious gateway can advertise 65535 and then send a response fragment of the same length, causing rpc_channel_read in libfreerdp/core/gateway/rpc.c to write up to 65535 bytes into the smaller ReceiveFragment buffer. This can crash the client and may permit code execution through attacker-controlled heap corruption. This issue is fixed in version 3.27.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.27.0 | — |
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 | 3.27.0+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 | USN-8561-1 |
| Ubuntu 25.10 | freerdp3 | No fix yet | — |
| Ubuntu 24.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.24.04.1 | USN-8561-1 |
| 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 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | freerdp +5 | 2:3.10.3-12.el10_2.11 | RHSA-2026:66349 |
| RHEL 9 | freerdp +4 | 2:2.11.7-7.el9_8.7 | RHSA-2026:98469, RHSA-2026:66347 |
| RHEL 8 | freerdp +4 | 2:2.11.7-13.el8_10 | RHSA-2026:69387 |
Show 11 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_0.18 | RHSA-2026:74471 |
| RHEL 9.6 EUS | freerdp +4 | 2:2.11.7-1.el9_6.14 | RHSA-2026:72479 |
| RHEL 9.4 E4S | freerdp +2 | 2:2.11.2-1.el9_4.12 | RHSA-2026:72481 |
| RHEL 9.2 E4S | freerdp +2 | 2:2.4.1-6.el9_2.13 | RHSA-2026:74470 |
| RHEL 8.8 TUS | freerdp +3 | 2:2.2.0-12.el8_8.12 | RHSA-2026:73068 |
| RHEL 8.8 E4S | freerdp +3 | 2:2.2.0-12.el8_8.12 | RHSA-2026:73068 |
| RHEL 8.6 EUS Long Life | freerdp +3 | 2:2.2.0-7.el8_6.13 | RHSA-2026:73027 |
| RHEL 8.6 AUS | freerdp +3 | 2:2.2.0-7.el8_6.13 | RHSA-2026:73027 |
| RHEL 8.4 EUS Long Life | freerdp +3 | 2:2.2.0-14.el8_4.4 | RHSA-2026:73026 |
| RHEL 8.4 AUS | freerdp +3 | 2:2.2.0-14.el8_4.4 | RHSA-2026:73026 |
| RHEL 7 ELS | freerdp +4 | 2.1.1-5.el7_9.13 | RHSA-2026:74610 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | freerdp +5 | 2:3.10.3-12.el10_2.11 | ALSA-2026:66349 |
| AlmaLinux 9 | freerdp +4 | 2:2.11.7-7.el9_8.7 | ALSA-2026:66347 |
| AlmaLinux 8 | freerdp +4 | 2:2.11.7-13.el8_10 | ALSA-2026:69387 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | freerdp | 2:3.10.3-12.el10_2.11 | RLSA-2026:66349 |
| Rocky Linux 9 | freerdp | 2:2.11.7-7.el9_8.7 | RLSA-2026:66347 |
| Rocky Linux 8 | freerdp | 2:2.11.7-13.el8_10 | RLSA-2026:69387 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | freerdp | 3.27.1-1.1 | openSUSE-SU-2026:11065-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | freerdp | 3.27.1-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | freerdp +5 | 2:3.6.3-1.amzn2023.0.13 | ALAS2023-2026-2012 |
| Amazon Linux 2 | freerdp +4 | 2:2.11.7-1.amzn2.0.13 | ALAS2-2026-3840 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | freerdp +4 | 2:2.11.7-13.el8_10 | ELSA-2026-69387 |
Advisories 24
- RHSA-2026:98469 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- WID-SEC-2026-1933 FreeRDP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- ALSA-2026:66347 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:66349 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:69387 Important: freerdp security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:74471 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:74610 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:74470 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:73026 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:73027 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:73068 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:72481 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:72479 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:69387 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:66349 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:66347 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- USN-8561-1 freerdp3 vulnerabilities Ubuntu Security Notices (USN) · Oct 1, 2026
- RLSA-2026:69387 Important: freerdp security update Rocky Linux Security Advisories · Sep 23, 2026
- ELSA-2026-69387 Important: freerdp security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 23, 2026
- RLSA-2026:66347 Important: freerdp security update Rocky Linux Security Advisories · Sep 11, 2026
- RLSA-2026:66349 Important: freerdp security update Rocky Linux Security Advisories · Sep 11, 2026
- ALAS2-2026-3840 Important: freerdp security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 4, 2026
- ALAS2023-2026-2012 Important: freerdp security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 4, 2026
- openSUSE-SU-2026:11065-1 freerdp-3.27.1-1.1 on GA media SUSE / openSUSE Security Updates · Jun 20, 2026