Description
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP).
xrdp < v0.9.21 contain a Out of Bound Read in xrdp_caps_process_confirm_active() function. There are no known workarounds for this issue. Users are advised to upgrade.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| neutrinolabs | xrdp | < 0.9.21 | — |
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 | xrdp | 0.9.21.1-1 | — |
| Debian 13 | xrdp | 0.9.21.1-1 | — |
| Debian 12 | xrdp | 0.9.21.1-1 | — |
| Debian 11 | xrdp | 0.9.21.1-1~deb11u1 | DSA-5502-1 |
| Debian 10 | xrdp | 0.9.9-1+deb10u3 | DLA-3375-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | xrdp | 0.9.17-2ubuntu2+esm1 | USN-6474-1 |
| Ubuntu Pro 20.04 LTS | xrdp | 0.9.12-1ubuntu0.1+esm1 | USN-6474-1 |
| Ubuntu Pro 18.04 LTS | xrdp | 0.9.5-2ubuntu0.1~esm2 | USN-6474-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | xrdp | 0.6.1-2ubuntu0.3+esm3 | USN-6474-1 |
| Ubuntu Pro 14.04 LTS | xrdp | 0.6.0-1ubuntu0.1+esm3 | USN-6474-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SLES 15 SP3 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SLES 15 SP2 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SLES 15 SP1 | xrdp | 0.9.6-150000.4.11.1 | SUSE-SU-2023:0012-1 |
| SLES 12 SP5 | xrdp | 0.9.10-3.8.1 | SUSE-SU-2023:0374-1 |
Show 22 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | xrdp | 0.9.0~git.1456906198.f422461-21.30.2 | SUSE-SU-2023:0340-1 |
| SLES 12 SP2 | xrdp | 0.9.0~git.1456906198.f422461-16.23.2 | SUSE-SU-2023:0387-1 |
| SLES for SAP 15 SP3 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SLES for SAP 15 SP2 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SLES for SAP 15 SP1 | xrdp | 0.9.6-150000.4.11.1 | SUSE-SU-2023:0012-1 |
| SLES for SAP 12 SP5 | xrdp | 0.9.10-3.8.1 | SUSE-SU-2023:0374-1 |
| SLES for SAP 12 SP4 | xrdp | 0.9.0~git.1456906198.f422461-21.30.2 | SUSE-SU-2023:0340-1 |
| SLE Real Time 15 SP3 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SLE HPC 15 SP3 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SLE HPC 15 SP2 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SLE HPC 15 SP1 | xrdp | 0.9.6-150000.4.11.1 | SUSE-SU-2023:0012-1 |
| SUSE OpenStack Cloud Crowbar 9 | xrdp | 0.9.0~git.1456906198.f422461-21.30.2 | SUSE-SU-2023:0340-1 |
| SUSE OpenStack Cloud 9 | xrdp | 0.9.0~git.1456906198.f422461-21.30.2 | SUSE-SU-2023:0340-1 |
| SUSE Manager Server 4.2 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SUSE Manager Server 4.1 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SUSE Manager Retail Branch Server 4.2 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SUSE Manager Retail Branch Server 4.1 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SUSE Manager Proxy 4.2 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SUSE Manager Proxy 4.1 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SUSE Enterprise Storage 7.1 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SUSE Enterprise Storage 7 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
| SUSE Enterprise Storage 6 | xrdp | 0.9.6-150000.4.11.1 | SUSE-SU-2023:0012-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xrdp | 0.9.20-4.1 | openSUSE-SU-2024:12602-1 |
| openSUSE Leap 15.4 | xrdp | 0.9.13.1-150200.4.15.1 | SUSE-SU-2023:0033-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xrdp | 0.9.21.1-r0 | — |
| Alpine v3.23 | xrdp | 0.9.21.1-r0 | — |
| Alpine v3.22 | xrdp | 0.9.21.1-r0 | — |
| Alpine v3.21 | xrdp | 0.9.21.1-r0 | — |
| Alpine v3.20 | xrdp | 0.9.21.1-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xrdp | 0.9.21.1-r0 | — |
| Alpine v3.18 | xrdp | 0.9.21.1-r0 | — |
| Alpine v3.17 | xrdp | 0.9.21.1-r0 | — |
Advisories 9
- USN-6474-1 xrdp vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- DSA-5502-1 xrdp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3375-1 xrdp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2023:0387-1 Security update for xrdp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0012-1 Security update for xrdp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12602-1 libpainter0-0.9.20-4.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0340-1 Security update for xrdp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0374-1 Security update for xrdp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0033-1 Security update for xrdp SUSE / openSUSE Security Updates · Feb 4, 2026