CVE-2026-41521: CWE-190: Integer Overflow or Wraparound in neutrinolabs xrdp
xrdp is an open source RDP server. Versions 0.10.6 and prior contain an integer overflow vulnerability when processing screen update messages within the vnc-any connection mode. A malicious remote VNC server can send crafted image dimensions that cause an integer overflow during memory buffer size calculation, resulting in an undersized allocation. Subsequent processing of the incoming image data using the original oversized parameters leads to an out-of-bounds read. An unauthenticated remote attacker could exploit this flaw to disclose sensitive information from the heap memory or cause a denial of service (DoS) via a process crash. This issue has been fixed in version 0.10.6.1.
AI Analysis
Technical Summary
CVE-2026-41521 is an integer overflow vulnerability (CWE-190) in neutrinolabs xrdp (an open source RDP server) affecting versions up to and including 0.10.6. The flaw occurs in the vnc-any connection mode during processing of screen update messages, where crafted image dimensions from a malicious remote VNC server cause an integer overflow in memory buffer size calculation. This leads to an undersized allocation and subsequent out-of-bounds read of heap memory. An unauthenticated remote attacker can exploit this to disclose sensitive information or cause a denial of service (process crash). The vulnerability is resolved in version 0.10.6.1.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to read out-of-bounds heap memory, potentially disclosing sensitive information. Additionally, exploitation can cause a denial of service by crashing the xrdp process. The vulnerability affects confidentiality and availability but does not impact integrity according to the CVSS vector.
Mitigation Recommendations
Upgrade xrdp to version 0.10.6.1 or later, where this integer overflow vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed fixed in 0.10.6.1.
CVE-2026-41521: CWE-190: Integer Overflow or Wraparound in neutrinolabs xrdp
Description
xrdp is an open source RDP server. Versions 0.10.6 and prior contain an integer overflow vulnerability when processing screen update messages within the vnc-any connection mode. A malicious remote VNC server can send crafted image dimensions that cause an integer overflow during memory buffer size calculation, resulting in an undersized allocation. Subsequent processing of the incoming image data using the original oversized parameters leads to an out-of-bounds read. An unauthenticated remote attacker could exploit this flaw to disclose sensitive information from the heap memory or cause a denial of service (DoS) via a process crash. This issue has been fixed in version 0.10.6.1.
CVSS v3.1
Score 8.2high
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
CVE-2026-41521 is an integer overflow vulnerability (CWE-190) in neutrinolabs xrdp (an open source RDP server) affecting versions up to and including 0.10.6. The flaw occurs in the vnc-any connection mode during processing of screen update messages, where crafted image dimensions from a malicious remote VNC server cause an integer overflow in memory buffer size calculation. This leads to an undersized allocation and subsequent out-of-bounds read of heap memory. An unauthenticated remote attacker can exploit this to disclose sensitive information or cause a denial of service (process crash). The vulnerability is resolved in version 0.10.6.1.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to read out-of-bounds heap memory, potentially disclosing sensitive information. Additionally, exploitation can cause a denial of service by crashing the xrdp process. The vulnerability affects confidentiality and availability but does not impact integrity according to the CVSS vector.
Mitigation Recommendations
Upgrade xrdp to version 0.10.6.1 or later, where this integer overflow vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed fixed in 0.10.6.1.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-20T18:18:50.682Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5e56f42a4a8d5989689f8a
Added to database: 07/20/2026, 17:12:20 UTC
Last enriched: 07/20/2026, 17:27:09 UTC
Last updated: 07/21/2026, 05:54:55 UTC
Views: 9
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