CVE-2026-33516: xrdp is an open source RDP server

Q: How do I fix CVE-2026-33516?

xrdp: upgrade to 0.10.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-33516 being exploited?

CVE-2026-33516 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-33516 affect?

CVE-2026-33516 affects xrdp. Severity is critical (CVSS 9.1). 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 remot

Q: How urgent is CVE-2026-33516?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2026-33516 is a critical-severity flaw (CVSS 9.1) affecting xrdp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-125
Published	2026-04-17
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: neutrinolabs

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-17 20:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

neutrinolabs xrdp UPGRADE

Affected: < 0.10.6

Fixed in: 0.10.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xrdp || rpm -q xrdp || xrdp --version

2. UPGRADE to 0.10.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xrdp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xrdp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33516?

xrdp: upgrade to 0.10.6. Exact commands for each OS are on this page.

Is CVE-2026-33516 being exploited?

CVE-2026-33516 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33516 affect?

CVE-2026-33516 affects xrdp. Severity is critical (CVSS 9.1). 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 remot

How urgent is CVE-2026-33516?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

WinRM and RDP vulnerabilities

Related CVEs

CVE-2026-32623 HIGH 8.1 UPGRADE xrdp is an open source RDP server
CVE-2026-32624 MEDIUM 6.5 UPGRADE xrdp is an open source RDP server
CVE-2026-32105 HIGH 7.7 UPGRADE xrdp is an open source RDP server
CVE-2026-33145 MEDIUM 6.3 UPGRADE xrdp is an open source RDP server
CVE-2026-33689 CRITICAL 9.1 UPGRADE xrdp is an open source RDP server

References

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