Description
FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients prior to version 3.5.1 are vulnerable to out-of-bounds read. This occurs when `WCHAR` string is read with twice the size it has and converted to `UTF-8`, `base64` decoded. The string is only used to compare against the redirection server certificate. Version 3.5.1 contains a patch for the issue. No known workarounds are available.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.5.1 | — |
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 | 3.5.1+dfsg1-1 | — |
| Debian 13 | freerdp3 | 3.5.1+dfsg1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | freerdp3 | 3.5.1+dfsg1-0ubuntu1 | USN-6759-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | freerdp +4 | 2:2.11.7-1.el9 | RHSA-2024:9092 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | freerdp +4 | 2:2.11.7-1.el9 | ELSA-2024-9092 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | freerdp-3 | 3.5.1-r0 | — |
Advisories 4
- RHSA-2024:9092 Red Hat Security Advisory: freerdp security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-6759-1 freerdp3 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- WID-SEC-2024-0954 FreeRDP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 11, 2026
- ELSA-2024-9092 Moderate: freerdp security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 14, 2024
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vffh-j6hh-95f4
- https://github.com/FreeRDP/FreeRDP/commit/626d10a94a88565d957ddc30768ed08b320049a7
- https://oss-fuzz.com/testcase-detail/4985227207311360
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7SIS6NUNLUBOV4CPCSWKDE6T6C2W3WTR/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PX3U6YPZQ7PEJBVKSBUOLWVH7DHROHY5/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ/