{"id":"CVE-2021-29978","aliases":["EUVD-2021-16437","GHSA-24c6-8h6m-mfm3"],"status":"published","title":"Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x...","description":"Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN \u003c 2.3.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.0278,"percentile":0.86558,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-08-05T19:45:54Z","modified":"2026-10-20T14:21:53Z","products":[{"vendor":"mozilla","product":"mozilla vpn"},{"vendor":"mozilla","product":"mozilla_vpn"}],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2021-31/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/797","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/798","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/799","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/800","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/801","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/803","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/804","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/805","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/806","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/808","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/809","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/810","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/issues/812","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/mozilla-mobile/mozilla-vpn-client/pull/816","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29978"},{"url":"https://github.com/advisories/GHSA-24c6-8h6m-mfm3"}],"sources":{"cve":[{"id":"CVE-2021-29978","description":"Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN \u003c 2.3.","status":"published","published":"2021-08-05T19:45:54Z","modified":"2024-08-03T22:24:57.563Z","updated_at":"2026-11-02T14:33:06.658806Z"}],"euvd":[{"id":"EUVD-2021-16437","description":"Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN \u003c 2.3.","status":"published","published":"2021-08-05T19:45:54Z","modified":"2024-08-03T22:24:57Z","updated_at":"2026-11-03T03:24:43.413555Z"}],"ghsa":[{"id":"GHSA-24c6-8h6m-mfm3","title":"Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x...","description":"Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN \u003c 2.3.","status":"published","published":"2022-05-24T19:10:11Z","modified":"2023-01-30T05:01:17Z","updated_at":"2026-11-02T14:46:22.480874Z"}],"nvd":[{"id":"CVE-2021-29978","description":"Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN \u003c 2.3.","status":"published","published":"2021-08-05T20:15:08.857Z","modified":"2026-06-17T03:48:32.737Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:56.562207Z"}],"osv":[{"id":"CVE-2021-29978","description":"Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN \u003c 2.3.","status":"published","published":"2021-08-05T20:15:08.857Z","modified":"2026-10-20T14:21:53.229809937Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:19.483607Z"}]}}