{"id":"CVE-2021-25255","aliases":["EUVD-2021-12166","GHSA-p986-xv2x-2cjm"],"status":"published","title":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.","description":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.","severity":{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0082,"percentile":0.57565,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2025-05-21T07:04:02Z","modified":"2026-06-17T03:41:43Z","products":[{"vendor":"yandex","product":"browser lite"},{"vendor":"yandex","product":"yandex_browser"}],"references":[{"url":"https://yandex.com/bugbounty/i/hall-of-fame-browser/","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25255"},{"url":"https://yandex.com/bugbounty/i/hall-of-fame-browser"},{"url":"https://github.com/advisories/GHSA-p986-xv2x-2cjm"}],"sources":{"cve":[{"id":"CVE-2021-25255","title":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.","description":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.","status":"published","published":"2025-05-21T07:04:02.436Z","modified":"2025-05-21T14:07:41.883Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:59.802172Z"}],"euvd":[{"id":"EUVD-2021-12166","description":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.","status":"published","published":"2025-05-21T07:04:02Z","modified":"2025-05-21T14:07:41Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"high"}],"updated_at":"2026-11-02T20:32:41.963587Z"}],"ghsa":[{"id":"GHSA-p986-xv2x-2cjm","title":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial...","description":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.","status":"published","published":"2025-05-21T21:31:37Z","modified":"2025-06-10T18:32:17Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:02:39.469785Z"}],"nvd":[{"id":"CVE-2021-25255","description":"Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.","status":"published","published":"2025-05-21T07:16:00.5Z","modified":"2026-06-17T03:41:43.66Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:07:09.005706Z"}]}}