freerdp3 — security advisory

{
  "id": "62b5d5a3d93e6a47a12d7df17d1fbf78a0c0e31471c19a32e4c42f573f20d71a",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-22853",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-22853",
    "summary": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndr_read_uint8Array. This vulnerability is fixed in 3.20.1.",
    "evidence": "osv:UBUNTU-CVE-2026-22853",
    "products": [
      {
        "name": {
          "value": "freerdp3",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.16.0+dfsg-2ubuntu0.3",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "3.14.0+dfsg-1ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.15.0+dfsg-2.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.16.0+dfsg-1ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.16.0+dfsg-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.16.0+dfsg-2ubuntu0.1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "UBUNTU-CVE-2026-22853",
      "aliases": [
        "UBUNTU-CVE-2026-22853"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P"
        },
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        },
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.16.0+dfsg-2ubuntu0.3"
                }
              ]
            }
          ],
          "package": {
            "name": "freerdp3",
            "purl": "pkg:deb/ubuntu/freerdp3?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "3.14.0+dfsg-1ubuntu1",
            "3.15.0+dfsg-2.1",
            "3.16.0+dfsg-1ubuntu1",
            "3.16.0+dfsg-2",
            "3.16.0+dfsg-2ubuntu0.1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-22853.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "freerdp3-proxy",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "freerdp3-proxy-modules",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "freerdp3-sdl",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "freerdp3-shadow-x11",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "freerdp3-wayland",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "freerdp3-x11",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "libfreerdp-client3-3",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "libfreerdp-server-proxy3-3",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "libfreerdp-server3-3",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "libfreerdp-shadow-subsystem3-3",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "libfreerdp-shadow3-3",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "libfreerdp3-3",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "libwinpr-tools3-3",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "libwinpr3-3",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              },
              {
                "binary_name": "winpr3-utils",
                "binary_version": "3.16.0+dfsg-2ubuntu0.3"
              }
            ],
            "availability": "No subscription required"
          }
        }
      ],
      "modified": "2026-10-27T04:17:50.807272922Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-22853"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-22853",
        "https://www.cve.org/CVERecord?id=CVE-2026-22853",
        "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47v9-p4gp-w5ch",
        "https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1",
        "https://ubuntu.com/security/notices/USN-8105-1"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-22853",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/2/score"
  },
  "source_id": "core-osv",
  "document_id": 460301,
  "published_at": "2026-01-14T18:16:00+00:00"
}