Security advisory

{
  "id": "720228b0223b67fb74ef9f1f7a1a09fc36642ce000cc30859f19a4e065a4f479",
  "url": "https://osv.dev/vulnerability/CVE-2021-28848",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-28848",
    "summary": "Mintty before 3.4.5 allows remote servers to cause a denial of service (Windows GUI hang) by telling the Mintty window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls. In other words, it does not implement a usleep or similar delay upon processing a title change.",
    "evidence": "osv:CVE-2021-28848",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-28848",
      "aliases": [
        "CVE-2021-28848"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mintty/mintty",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3ad9946764faa5a9ed4fe3dee07e5841cd61493d"
                },
                {
                  "fixed": "bd52109993440b6996760aaccb66e68e782762b9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mintty_project:mintty:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.4.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bd52109993440b6996760aaccb66e68e782762b9"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.4.4",
            "3.4.3",
            "3.4.2",
            "3.4.1",
            "3.4.0",
            "3.3.0",
            "3.2.0",
            "3.1.8",
            "3.1.7",
            "3.1.6",
            "3.1.5",
            "3.1.4",
            "3.1.0",
            "3.0.6",
            "3.0.5",
            "3.0.4",
            "3.0.3",
            "3.0.2",
            "3.0.1",
            "3.0.0",
            "2.9.9",
            "2.9.8",
            "2.9.7",
            "2.9.6",
            "2.9.5",
            "2.9.4",
            "2.9.3",
            "2.9.2",
            "2.9.1",
            "2.9.0",
            "2.8.5",
            "2.8.4",
            "2.8.3",
            "2.8.2",
            "2.8.1",
            "2.8.0",
            "2.7.9",
            "2.7.8",
            "2.7.7",
            "2.7.6",
            "2.7.5",
            "2.7.4",
            "2.7.3",
            "2.7.2",
            "2.7.1",
            "2.7.0",
            "2.6.2",
            "2.6.1",
            "2.6.0",
            "2.5.1",
            "2.5.0",
            "2.4.3",
            "2.4.2",
            "2.4.1",
            "2.4.0",
            "2.3.7release",
            "2.3.6",
            "2.3.5",
            "2.3.4",
            "2.3.3",
            "2.3.2",
            "2.3.1",
            "2.2.4",
            "2.2.3",
            "2.2.2",
            "2.2.1",
            "2.1.5",
            "2.1.4",
            "2.1.3",
            "2.1.1",
            "2.0.3",
            "2.0.2",
            "2.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-28848.json",
            "vanir_signatures": [
              {
                "id": "CVE-2021-28848-19fd5b93",
                "digest": {
                  "length": 2255,
                  "function_hash": "28169650809378464349498538494502767073"
                },
                "source": "https://github.com/mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9",
                "target": {
                  "file": "src/termout.c",
                  "function": "do_winop"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-28848-6c06ef0e",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "317428911661926661868252761962027447717",
                    "112468394346120965518991236116403409257",
                    "168987099712524418904182299280483948441",
                    "311328272091108505432879204472786237116",
                    "197200895768927549944824240411251098537",
                    "266539331141809853349953574222369638921",
                    "220351794621176987917549291880673623645",
                    "170564355797638682455443791316418191088"
                  ]
                },
                "source": "https://github.com/mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9",
                "target": {
                  "file": "src/termout.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T14:20:32Z"
          }
        }
      ],
      "modified": "2026-10-20T14:20:32.144550426Z",
      "provider": "osv",
      "references": [
        "https://mintty.github.io/",
        "https://github.com/mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9",
        "https://github.com/mintty/mintty/compare/3.4.4...3.4.5"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-28848",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388815,
  "published_at": "2021-06-03T12:15:07.757+00:00"
}