FreeRDP 3.14.1 before 3.32.0 Integer Underflow in BMP Writer via Clipboard

{
  "id": "4478cf4f12ae6c8639ca35acfe59f982c3905b581c16cc334085f7f8e60b4083",
  "url": "https://osv.dev/vulnerability/CVE-2026-111881",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "FreeRDP 3.14.1 before 3.32.0 Integer Underflow in BMP Writer via Clipboard",
    "summary": "FreeRDP from 3.14.1 before 3.32.0 contains an integer underflow in the WinPR BMP writer, where a mismatched stride calculation passes SIZE_MAX - 3 to Stream_Zero for sub-byte images. A malicious RDP clipboard peer can return a crafted 1-bpp BMP processed by clipboard_synthesize_image_format_to_bmp for CF_DIB/CF_DIBV5, crashing the client or causing an out-of-bounds write.",
    "evidence": "osv:CVE-2026-111881",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-111881",
      "aliases": [
        "CVE-2026-111881",
        "GHSA-27m7-gwhh-6hhf"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/freerdp/freerdp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4019dcd4097d550d02dd6b70ee88b6a1189be26c"
                },
                {
                  "fixed": "d27a4f7c1c63b62a5e60e5d939ad116cfb58ffc1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "3.14.1"
                      },
                      {
                        "fixed": "3.32.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "3.14.1"
                      },
                      {
                        "fixed": "3.32.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111881.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.308537745Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111881.json",
        "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-27m7-gwhh-6hhf",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-111881",
        "https://www.vulncheck.com/advisories/freerdp-3.14.1-before-3.32.0-integer-underflow-in-bmp-writer-via-clipboard"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-191"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111881.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-111881",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 508121,
  "published_at": "2026-10-17T18:46:09.069+00:00"
}