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TI-2026-25912 Aliases CVE-2026-33516

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

Priority LOW 36CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00427 37th percentileScored 2026-11-07
Fix Fixed xrdp (neutrinolabs): 0.10.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
neutrinolabsxrdpbefore 0.10.60.10.6Patch availableCNA
  • xrdp Vendorneutrinolabs Affected before 0.10.6 Fixed in 0.10.6 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:neutrinolabs:xrdp:*:*:*:*:*:*:*:*before 0.10.6Vulnerableneutrinolabs
  • 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

  1. 2026-10-02 Threatist record created from CVE-2026-33516
  2. 2026-10-25 EPSS moved to the below the 50th percentile

References

Patch 1

Advisory 1

  • 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