TI-2026-26069 Aliases CVE-2026-33689

xrdp: Pre-authentication out-of-bounds reads in channel parsers

MEDIUM 44CWE-125Published 2026-04-17 · Updated 2026-04-20

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00484 41st percentileScored 2026-11-07

Fix Fixed xrdp (neutrinolabs): 0.10.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
neutrinolabs	xrdp	before 0.10.6	0.10.6	Patch available	CNA

xrdp Vendorneutrinolabs Affected before 0.10.6 Fixed in 0.10.6 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:neutrinolabs:xrdp::::::::	before 0.10.6	Vulnerable	neutrinolabs

cpe:2.3:a:neutrinolabs:xrdp:*:*:*:*:*:*:*:* Versions before 0.10.6 Vulnerable ·neutrinolabs

Remediation

Fix · CNA xrdp (neutrinolabs) Fixed in 0.10.6

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2026-33689
2026-10-25 EPSS moved to the below the 50th percentile

References

Patch 1

https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6

Advisory 1

https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-92mr-6wpp-27jj

TI-2025-42163 xrdp improperly checks bounds of domain string length, which leads to Stack-based Buffer Overflow CVSS 3.1CRITICAL 9.8
TI-2026-29860 xrdp: lib_palette_update Heap Buffer Overflow & RCE CVSS 3.1CRITICAL 9.8
TI-2022-07540 Buffer Overflow in xrdp CVSS 3.1CRITICAL 9.8
TI-2022-07539 Buffer Overflow occurs in xrdp CVSS 3.1CRITICAL 9.8
TI-2022-07538 Out of Bound Write in xrdp CVSS 3.1CRITICAL 9.8
TI-2022-07537 Buffer Overflow in xrdp CVSS 3.1CRITICAL 9.8

See all 36 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences