Quick answers
- Is CVE-2026-54538 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-54538 being exploited in the wild.
- How severe is CVE-2026-54538?
- High severity, with a CVSS score of 7.5, published 20 July 2026.
- Which products and versions are affected?
- Neutrinolabs Xrdp <= 0.10.6.
- Is there a fix for CVE-2026-54538?
- A patch was published on 2026-07-06: Version 0.10.6.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-54538 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-54538?
- Check whether you run Neutrinolabs Xrdp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A vulnerability classified as CWE-835 (Loop with Unreachable Exit Condition) exists in xrdp versions 0.10.6 and prior. The root cause is a failure to validate the 'totalLength' field within the RDP protocol control header during packet reception. By sending a specially crafted packet, an unauthenticated remote attacker can prevent the internal data pointer from advancing. This bypasses deadlock prevention mechanisms for specific protocol data units, resulting in an infinite, CPU-bound loop. This leads to service unavailability and potential system-wide resource exhaustion. The issue is resolved in version 0.10.6.1.
Affected products
- neutrinolabs xrdp <= 0.10.6
Timeline
- 2026-07-02: advisory: GitHub Security Advisory published
- 2026-07-06: patched: Version 0.10.6.1 released
- 2026-07-20: disclosed: NVD publication date