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CVE-2026-33516

Neutrinolabs Xrdp out-of-bounds read

9.1 CRITICALEPSS 0.68%
  1. Published17 Apr 2026

Description

xrdp is an open source RDP server. Versions through 0.10.5 contain an out-of-bounds read vulnerability during the RDP capability exchange phase. The issue occurs when memory is accessed before validating the remaining buffer length. A remote, unauthenticated attacker can trigger this vulnerability by sending a specially crafted Confirm Active PDU. Successful exploitation could lead to a denial of service (process crash) or potential disclosure of sensitive information from the process memory. This issue has been fixed in version 0.10.6.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

Neutrinolabs Xrdp< 0.10.6

Remediation

Fixed in
Neutrinolabs Xrdp≥ 0.10.6

References

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Frequently asked

Is CVE-2026-33516 being actively exploited?

CVE-2026-33516 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.68%.

How severe is CVE-2026-33516?

CVE-2026-33516 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.68% probability of exploitation.

Which products are affected by CVE-2026-33516?

Affected products include Neutrinolabs Xrdp.

How do I fix CVE-2026-33516?

Upgrade affected software to a fixed version, for example Neutrinolabs Xrdp 0.10.6 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.