CVE-2025-68670

Published Jan 27, 2026

Last updated 3 months ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-68670 is identified as an unauthenticated stack-based buffer overflow vulnerability affecting xrdp, an open-source Remote Desktop Protocol (RDP) server. This flaw is present in xrdp versions prior to v0.10.5. The vulnerability arises from inadequate bounds checking when the xrdp server processes user domain information during the initial RDP connection sequence. This improper handling allows remote attackers to potentially overwrite stack buffers and return addresses, which could lead to the execution of arbitrary code on affected systems without requiring any authentication. A patch for this issue is available in xrdp version 0.10.5 and later.

Description: xrdp is an open source RDP server. xrdp before v0.10.5 contains an unauthenticated stack-based buffer overflow vulnerability. The issue stems from improper bounds checking when processing user domain information during the connection sequence. If exploited, the vulnerability could allow remote attackers to execute arbitrary code on the target system. The vulnerability allows an attacker to overwrite the stack buffer and the return address, which could theoretically be used to redirect the execution flow. The impact of this vulnerability is lessened if a compiler flag has been used to build the xrdp executable with stack canary protection. If this is the case, a second vulnerability would need to be used to leak the stack canary value. Upgrade to version 0.10.5 to receive a patch. Additionally, do not rely on stack canary protection on production systems.
Source: security-advisories@github.com
NVD status: Analyzed
Products: xrdp, debian_linux

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

security-advisories@github.com: CWE-121
nvd@nist.gov: CWE-787

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score: 6

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:neutrinolabs:xrdp:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "EF7BFA59-F9D6-4B4F-8CB7-137054E9C030",
            "versionEndExcluding": "0.10.5",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
            "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.