Vulnerability · Published Apr 17, 2026 · Assigned by GitHub_M
CVE-2026-32624xrdp: Heap buffer overflow in xrdp_sec_process_logon_info() via incorrect g_strncat length calculation
Medium 6.3
In plain English
A medium-severity heap buffer overflow in xrdp from neutrinolabs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
xrdp is an open source RDP server. Versions through 0.10.5 contain a heap-based buffer overflow vulnerability in its logon processing. In environments where domain_user_separator is configured in xrdp.ini, an unauthenticated remote attacker can send a crafted, excessively long username and domain name to overflow the internal buffer. This can corrupt adjacent memory regions, potentially leading to a Denial of Service (DoS) or unexpected behavior. The domain_name_separator directive is commented out by default, systems are not affected by this vulnerability unless it is intentionally configured. This issue has been fixed in version 0.10.6.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | xrdp | 0.10.6-r0 | ALPINE-CVE-2026-32624 |
| Alpine:v3.24 | xrdp | 0.10.6-r0 | ALPINE-CVE-2026-32624 |
| Debian:12 | xrdp | 0.9.21.1-1+deb12u3 | DEBIAN-CVE-2026-32624 |
| Debian:13 | xrdp | 0.10.1-3.1+deb13u2 | DEBIAN-CVE-2026-32624 |
| Debian:14 | xrdp | 0.10.6-1 | DEBIAN-CVE-2026-32624 |
| Ubuntu:22.04:LTS | xrdp | no fix listed | UBUNTU-CVE-2026-32624 |
| Ubuntu:24.04:LTS | xrdp | no fix listed | UBUNTU-CVE-2026-32624 |
| Ubuntu:25.10 | xrdp | no fix listed | UBUNTU-CVE-2026-32624 |
| Ubuntu:26.04:LTS | xrdp | no fix listed | UBUNTU-CVE-2026-32624 |
| Ubuntu:26.10 | xrdp | no fix listed | UBUNTU-CVE-2026-32624 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| neutrinolabs | xrdp | < 0.10.6 |
Weakness: CWE-122 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
References
- https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-7q2g-6fjr-h6pp x_refsource_CONFIRM
- https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6 x_refsource_MISC