CVE catalog
CVE-2020-4044
xrdp: CVE-2020-4044
- Severity
- High · CVSS 7.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.40% · Oct 25, 2026
The xrdp-sesman service before version 0.9.13.1 can be crashed by connecting over port 3350 and supplying a malicious payload. Once the xrdp-sesman process is dead, an unprivileged attacker on the server could then proceed to start their own imposter sesman service listening on port 3350. This will allow them to capture any user credentials that are submitted to XRDP and approve or reject arbitrary login credentials. For xorgxrdp sessions in particular, this allows an unauthorized user to hijack an existing session. This is a buffer overflow attack, so there may be a risk of arbitrary code execution as well.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | xrdp | sid | 0.10.6.1-3 | fixed |
| Debian | xrdp | forky | 0.10.6.1-3 | fixed |
| Debian | xrdp | trixie | 0.10.1-3.1+deb13u2 | fixed |
| Debian | xrdp | trixie-security | 0.10.1-3.1+deb13u2 | fixed |
| Debian | xrdp | bookworm | 0.9.21.1-1+deb12u2 | fixed |
| Debian | xrdp | bookworm-security | 0.9.21.1-1+deb12u3 | fixed |
| Ubuntu | xrdp | pro | 0.9.1-9 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-1 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-2 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-3 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-4 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-5 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.5-1 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.5-1build1 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.5-2 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.5-2ubuntu0.1~esm1 | fixed |
| Ubuntu | xrdp | 20.04 | 0.9.9-1 | vulnerable |
| Ubuntu | xrdp | 20.04 | 0.9.12-1 | vulnerable |
| Ubuntu | xrdp | 20.04 | 0.9.12-1ubuntu0.1 | fixed |
| Suse | xrdp | hpe helion openstack 8 | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | openstack cloud 8 | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | openstack cloud 9 | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | openstack cloud crowbar 8 | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | openstack cloud crowbar 9 | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | linux enterprise server for sap applications 12 sp3 | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | linux enterprise server for sap applications 12 sp4 | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | linux enterprise server 12 sp3-ltss | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | linux enterprise server 12 sp3-bcl | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | linux enterprise server 12 sp4-ltss | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | enterprise storage 5 | 0.9.0~git.1456906198.f422461-21.27.1 | fixed |
| Suse | xrdp | linux enterprise server 12 sp5 | 0.9.10-3.3.1 | fixed |
| Suse | xrdp | linux enterprise server for sap applications 12 sp5 | 0.9.10-3.3.1 | fixed |
| Suse | xrdp | linux enterprise module for basesystem 15 sp1 | 0.9.6-4.8.1 | fixed |
| Suse | xrdp | linux enterprise high performance computing 15-espos | 0.9.6-4.8.1 | fixed |
| Suse | xrdp | linux enterprise high performance computing 15-ltss | 0.9.6-4.8.1 | fixed |
| Suse | xrdp | linux enterprise server 15-ltss | 0.9.6-4.8.1 | fixed |
| Suse | xrdp | linux enterprise server for sap applications 15 | 0.9.6-4.8.1 | fixed |
| Ubuntu | xrdp | pro | 0.9.1-9 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-1 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-2 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-3 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-4 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.4-5 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.5-1 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.5-1build1 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.5-2 | vulnerable |
| Ubuntu | xrdp | pro | 0.9.5-2ubuntu0.1~esm1 | fixed |
| Ubuntu | xrdp | 20.04 | 0.9.9-1 | vulnerable |
| Ubuntu | xrdp | 20.04 | 0.9.12-1 | vulnerable |
| Ubuntu | xrdp | 20.04 | 0.9.12-1ubuntu0.1 | fixed |
| Opensuse | xrdp | leap 15.2 | 0.9.13.1-lp152.3.3.1 | fixed |
| Opensuse | xrdp | leap 15.1 | 0.9.6-lp151.4.6.1 | fixed |
| Suse | xrdp | linux enterprise module for basesystem 15 sp2 | 0.9.13.1-4.3.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | xrdp | source | sid | 0.9.12-1.1 | not yet assigned | Not reported | [964573] |
| Debian | xrdp | source | forky | 0.9.12-1.1 | not yet assigned | Not reported | [964573] |
| Debian | xrdp | source | trixie | 0.9.12-1.1 | not yet assigned | Not reported | [964573] |
| Debian | xrdp | source | bookworm | 0.9.12-1.1 | not yet assigned | Not reported | [964573] |
| Ubuntu | xrdp | deb | pro | 0.9.5-2ubuntu0.1~esm1 | Not reported | USN-6469-1 | Not reported |
| Ubuntu | xrdp | deb | 20.04 | 0.9.12-1ubuntu0.1 | Not reported | USN-6469-1 | Not reported |
| Suse | xrdp | rpm | hpe helion openstack 8 | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | openstack cloud 8 | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | openstack cloud 9 | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | openstack cloud crowbar 8 | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | openstack cloud crowbar 9 | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise server for sap applications 12 sp3 | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise server for sap applications 12 sp4 | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise server 12 sp3-ltss | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise server 12 sp3-bcl | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise server 12 sp4-ltss | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | enterprise storage 5 | 0.9.0~git.1456906198.f422461-21.27.1 | Not reported | SUSE-SU-2020:1991-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise server 12 sp5 | 0.9.10-3.3.1 | Not reported | SUSE-SU-2020:1918-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise server for sap applications 12 sp5 | 0.9.10-3.3.1 | Not reported | SUSE-SU-2020:1918-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise module for basesystem 15 sp1 | 0.9.6-4.8.1 | Not reported | SUSE-SU-2020:1933-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise high performance computing 15-espos | 0.9.6-4.8.1 | Not reported | SUSE-SU-2020:1933-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise high performance computing 15-ltss | 0.9.6-4.8.1 | Not reported | SUSE-SU-2020:1933-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise server 15-ltss | 0.9.6-4.8.1 | Not reported | SUSE-SU-2020:1933-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise server for sap applications 15 | 0.9.6-4.8.1 | Not reported | SUSE-SU-2020:1933-1 | Not reported |
| Ubuntu | xrdp | deb | pro | 0.9.5-2ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2020-4044 | Not reported |
| Ubuntu | xrdp | deb | 20.04 | 0.9.12-1ubuntu0.1 | Not reported | UBUNTU-CVE-2020-4044 | Not reported |
| Opensuse | xrdp | rpm | leap 15.2 | 0.9.13.1-lp152.3.3.1 | Not reported | OPENSUSE-SU-2020:1200-1 | Not reported |
| Opensuse | xrdp | rpm | leap 15.1 | 0.9.6-lp151.4.6.1 | Not reported | OPENSUSE-SU-2020:0999-1 | Not reported |
| Suse | xrdp | rpm | linux enterprise module for basesystem 15 sp2 | 0.9.13.1-4.3.1 | Not reported | SUSE-SU-2020:2142-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [xrdp]Unknown
Details (6)
0.9.21.1-1+deb12u2· amd64 · bookwormFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · bookworm; dsa · xrdp · debian · 12
0.9.21.1-1+deb12u2· arm64 · bookwormFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · bookworm; dsa · xrdp · debian · 12
0.9.24-5~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · bookworm; dsa · xrdp · debian · 12
0.9.24-5~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · bookworm; dsa · xrdp · debian · 12
0.9.21.1-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · bookworm; dsa · xrdp · debian · 12
0.9.21.1-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · bookworm; dsa · xrdp · debian · 12
[Debian 13 (Trixie)]
- [xrdp]Unknown
Details (5)
0.10.1-3.1+deb13u1· amd64 · trixieFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · 13
0.10.1-3.1+deb13u1· arm64 · trixieFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · 13
0.10.1-3.1+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · 13
0.10.1-3.1+deb13u2· amd64 · trixie-securityFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · 13
0.10.1-3.1+deb13u2· arm64 · trixie-securityFixed · Fixed:
0.9.12-1.1dsa · xrdp · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2020_1918-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-4044]
- [https://osv.dev/vulnerability/DLA-2319-1]
- [https://osv.dev/vulnerability/DSA-4737-1]
- [https://osv.dev/vulnerability/SUSE-SU-2020:1918-1]
- [https://osv.dev/vulnerability/SUSE-SU-2020:1933-1]
- [https://osv.dev/vulnerability/SUSE-SU-2020:1991-1]
- [https://osv.dev/vulnerability/SUSE-SU-2020:2142-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-4044]
- [https://osv.dev/vulnerability/USN-6469-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2020:0999-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2020:1200-1]
- [https://security-tracker.debian.org/tracker/CVE-2020-4044]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]