{"id":"CVE-2020-8806","aliases":["EUVD-2020-29654","GHSA-mrf7-f24r-vmc7"],"status":"published","title":"Electric Coin Company Zcashd before 2.1.1-1 allows attackers to trigger consensus failure and...","description":"Electric Coin Company Zcashd before 2.1.1-1 allows attackers to trigger consensus failure and double spending. A valid chain could be incorrectly rejected because timestamp requirements on block headers were not properly enforced.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01039,"percentile":0.64266,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2021-02-05T09:08:28Z","modified":"2026-06-17T03:26:58Z","products":[{"vendor":"electriccoin","product":"zcashd"}],"references":[{"url":"https://electriccoin.co/blog/new-releases-2-1-1-and-hotfix-2-1-1-1/","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8806"},{"url":"https://github.com/advisories/GHSA-mrf7-f24r-vmc7"}],"sources":{"cve":[{"id":"CVE-2020-8806","description":"Electric Coin Company Zcashd before 2.1.1-1 allows attackers to trigger consensus failure and double spending. A valid chain could be incorrectly rejected because timestamp requirements on block headers were not properly enforced.","status":"published","published":"2021-02-05T09:08:28Z","modified":"2024-08-04T10:12:10.489Z","updated_at":"2026-11-02T14:35:50.88562Z"}],"euvd":[{"id":"EUVD-2020-29654","description":"Electric Coin Company Zcashd before 2.1.1-1 allows attackers to trigger consensus failure and double spending. A valid chain could be incorrectly rejected because timestamp requirements on block headers were not properly enforced.","status":"published","published":"2021-02-05T09:08:28Z","modified":"2024-08-04T10:12:10Z","updated_at":"2026-11-03T03:07:56.155078Z"}],"ghsa":[{"id":"GHSA-mrf7-f24r-vmc7","title":"Electric Coin Company Zcashd before 2.1.1-1 allows attackers to trigger consensus failure and...","description":"Electric Coin Company Zcashd before 2.1.1-1 allows attackers to trigger consensus failure and double spending. A valid chain could be incorrectly rejected because timestamp requirements on block headers were not properly enforced.","status":"published","published":"2022-05-24T17:41:12Z","modified":"2023-01-29T05:06:23Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:46:00.528527Z"}],"nvd":[{"id":"CVE-2020-8806","description":"Electric Coin Company Zcashd before 2.1.1-1 allows attackers to trigger consensus failure and double spending. A valid chain could be incorrectly rejected because timestamp requirements on block headers were not properly enforced.","status":"published","published":"2021-02-05T14:15:17.45Z","modified":"2026-06-17T03:26:58.6Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:06:34.188486Z"}]}}