{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:neutrinolabs:xrdp:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.10.6.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "80c52879fead585d6347df5b3c587718adf8f5a5"
            }
          ],
          "repo": "https://github.com/neutrinolabs/xrdp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-mg8j-x9rw-9xv3"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-126"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55238.json"
  },
  "details": "xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of RDP Confirm Active PDU, where during the capability negotiation phase, the parser did not perform sufficient length validation for specific capability sets. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted RDP packet containing malformed capability data. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service. This issue has been fixed in version 0.10.6.1.",
  "id": "CVE-2026-55238",
  "modified": "2026-08-12T03:51:49.424954080Z",
  "published": "2026-07-20T17:05:01.470Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55238.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-mg8j-x9rw-9xv3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55238"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "xrdp: Malformed Confirm Active capability sets cause out-of-bounds reads"
}