Vulnerability Description
xrdp is an open source RDP server. Versions through 0.10.5 contain a heap-based buffer overflow vulnerability in the NeutrinoRDP module. When proxying RDP sessions from xrdp to another server, the module fails to properly validate the size of reassembled fragmented virtual channel data against its allocated memory buffer. A malicious downstream RDP server (or an attacker capable of performing a Man-in-the-Middle attack) could exploit this flaw to cause memory corruption, potentially leading to a Denial of Service (DoS) or Remote Code Execution (RCE). The NeutrinoRDP module is not built by default. This vulnerability only affects environments where the module has been explicitly compiled and enabled. Users can verify if the module is built by checking for --enable-neutrinordp in the output of the xrdp -v command. This issue has been fixed in version 0.10.6.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Neutrinolabs | Xrdp | < 0.10.6 |
Related Weaknesses (CWE)
References
- https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6PatchRelease Notes
- https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-phw3-qp59-x2v4Vendor Advisory
FAQ
What is CVE-2026-32623?
CVE-2026-32623 is a vulnerability with a CVSS score of 8.1 (HIGH). xrdp is an open source RDP server. Versions through 0.10.5 contain a heap-based buffer overflow vulnerability in the NeutrinoRDP module. When proxying RDP sessions from xrdp to another server, the mod...
How severe is CVE-2026-32623?
CVE-2026-32623 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-32623?
Check the references section above for vendor advisories and patch information. Affected products include: Neutrinolabs Xrdp.