CVE-2026-32623 Details
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.
A heap-based buffer overflow vulnerability has been identified in the xrdp RDP server, specifically in the NeutrinoRDP module, in versions through 0.10.5. This vulnerability arises when the module proxies RDP sessions to another server, as it improperly validates the size of reassembled fragmented virtual channel data against the allocated memory buffer. This flaw could be exploited by a malicious downstream RDP server or an attacker performing a Man-in-the-Middle attack, leading to memory corruption that could cause a Denial of Service (DoS) or allow Remote Code Execution (RCE). The NeutrinoRDP module is not enabled by default, and this vulnerability only affects environments where the module has been compiled and activated. Users can check if the module is enabled by looking for '--enable-neutrinordp' in the output of the 'xrdp -v' command.
Users can upgrade to xrdp version 0.10.6, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 21, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6 | [email protected] | PatchRelease Notes |
| https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-phw3-qp59-x2v4 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| neutrinolabs xrdp | < 0.10.6 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 27, 2026 | Initial Analysis | [email protected] |
| Apr 17, 2026 | New CVE Received | [email protected] |