Security advisory

{
  "id": "e3dca8dc320e030d994d9f18e32d526ae7366d85f504ba35289ec576b48380b6",
  "url": "https://osv.dev/vulnerability/CVE-2021-46873",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-46873",
    "summary": "WireGuard, such as WireGuard 0.5.3 on Windows, does not fully account for the possibility that an adversary might be able to set a victim's system time to a future value, e.g., because unauthenticated NTP is used. This can lead to an outcome in which one static private key becomes permanently useless.",
    "evidence": "osv:CVE-2021-46873",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-46873",
      "aliases": [
        "CVE-2021-46873"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wireguard/wireguard-windows",
              "type": "GIT",
              "events": [
                {
                  "introduced": "28e903804aa1302b791c24093dd7f42f0c7d0952"
                },
                {
                  "last_affected": "28e903804aa1302b791c24093dd7f42f0c7d0952"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wireguard:wireguard:0.5.3:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.5.3"
                      },
                      {
                        "last_affected": "0.5.3"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.5.3",
            "v0.5.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-46873.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:59.974975142Z",
      "provider": "osv",
      "references": [
        "https://lists.zx2c4.com/pipermail/wireguard/2021-August/006916.html"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-46873",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 439431,
  "published_at": "2023-01-29T23:15:08.703+00:00"
}