CVE-2026-55645: CWE-125: Out-of-bounds Read in neutrinolabs xrdp
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted, truncated Client Control PDU. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service.This issue has been fixed in version 0.10.6.1.
AI Analysis
Technical Summary
The vulnerability in neutrinolabs xrdp (CVE-2026-55645) is an out-of-bounds read (CWE-125) caused by insufficient length validation when parsing Client Control PDUs during the RDP connection setup. Remote unauthenticated attackers can exploit this by sending truncated PDUs, causing the affected xrdp process to read beyond buffer boundaries and crash. Due to xrdp's architecture of forking a new process per connection, a single process crash does not typically affect the entire service. The flaw affects versions up to and including 0.10.6 and is resolved in version 0.10.6.1.
Potential Impact
Successful exploitation results in an out-of-bounds memory read leading to a denial of service by crashing the xrdp process handling the connection. There is no indication of confidentiality or integrity impact. The overall xrdp service remains available due to process isolation. No known exploits are reported in the wild.
Mitigation Recommendations
Upgrade to xrdp version 0.10.6.1 or later where this vulnerability is fixed. Until patched, be aware that individual connection processes may crash if exposed to malformed Client Control PDUs, but the main service is unlikely to be fully disrupted. No other specific mitigations are provided.
CVE-2026-55645: CWE-125: Out-of-bounds Read in neutrinolabs xrdp
Description
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted, truncated Client Control PDU. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service.This issue has been fixed in version 0.10.6.1.
CVSS v3.1
Score 6.5medium
Affected software
pkg:github/neutrinolabs/xrdpRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in neutrinolabs xrdp (CVE-2026-55645) is an out-of-bounds read (CWE-125) caused by insufficient length validation when parsing Client Control PDUs during the RDP connection setup. Remote unauthenticated attackers can exploit this by sending truncated PDUs, causing the affected xrdp process to read beyond buffer boundaries and crash. Due to xrdp's architecture of forking a new process per connection, a single process crash does not typically affect the entire service. The flaw affects versions up to and including 0.10.6 and is resolved in version 0.10.6.1.
Potential Impact
Successful exploitation results in an out-of-bounds memory read leading to a denial of service by crashing the xrdp process handling the connection. There is no indication of confidentiality or integrity impact. The overall xrdp service remains available due to process isolation. No known exploits are reported in the wild.
Mitigation Recommendations
Upgrade to xrdp version 0.10.6.1 or later where this vulnerability is fixed. Until patched, be aware that individual connection processes may crash if exposed to malformed Client Control PDUs, but the main service is unlikely to be fully disrupted. No other specific mitigations are provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-16T23:52:12.058Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5e56f42a4a8d5989689faa
Added to database: 07/20/2026, 17:12:20 UTC
Last enriched: 07/20/2026, 17:27:31 UTC
Last updated: 07/21/2026, 03:42:23 UTC
Views: 14
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