CVE-2026-33689: CWE-125: Out-of-bounds Read in neutrinolabs xrdp
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
AI Analysis
Technical Summary
The vulnerability in neutrinolabs xrdp (versions < 0.10.6) involves an out-of-bounds read (CWE-125) in the pre-authentication RDP message parsing logic. This arises from improper validation of dynamic channel communication buffer lengths, allowing a remote unauthenticated attacker to trigger the flaw by sending specially crafted packets during connection setup. The flaw can lead to denial-of-service or information disclosure. The CVSS 4.0 score is 8.7 (high severity). The vendor fixed this issue in version 0.10.6.
Potential Impact
Successful exploitation can cause the xrdp service to crash, resulting in denial-of-service. There is also potential for sensitive information disclosure from the service's memory space. The vulnerability is exploitable remotely without authentication, increasing risk. No known exploits in the wild have been reported yet.
Mitigation Recommendations
Upgrade xrdp to version 0.10.6 or later, where this vulnerability is fixed. Since this is not a cloud service, users must apply the patch themselves. Patch status is confirmed by the vendor's fix in version 0.10.6.
CVE-2026-33689: CWE-125: Out-of-bounds Read in neutrinolabs xrdp
Description
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
CVSS v4.0
Score 8.7high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in neutrinolabs xrdp (versions < 0.10.6) involves an out-of-bounds read (CWE-125) in the pre-authentication RDP message parsing logic. This arises from improper validation of dynamic channel communication buffer lengths, allowing a remote unauthenticated attacker to trigger the flaw by sending specially crafted packets during connection setup. The flaw can lead to denial-of-service or information disclosure. The CVSS 4.0 score is 8.7 (high severity). The vendor fixed this issue in version 0.10.6.
Potential Impact
Successful exploitation can cause the xrdp service to crash, resulting in denial-of-service. There is also potential for sensitive information disclosure from the service's memory space. The vulnerability is exploitable remotely without authentication, increasing risk. No known exploits in the wild have been reported yet.
Mitigation Recommendations
Upgrade xrdp to version 0.10.6 or later, where this vulnerability is fixed. Since this is not a cloud service, users must apply the patch themselves. Patch status is confirmed by the vendor's fix in version 0.10.6.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-23T16:34:59.932Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e29a32bdfbbecc598cc5db
Added to database: 4/17/2026, 8:38:10 PM
Last enriched: 4/25/2026, 2:50:19 AM
Last updated: 5/31/2026, 8:37:46 PM
Views: 64
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