CVE-2021-25263

{"containers": {"cna": {"affected": [{"product": "Yandex Browser (Desktop)", "vendor": "n/a", "versions": [{"status": "affected", "version": "All versions prior to version 21.9.0.390"}]}], "descriptions": [{"lang": "en", "value": "Local privilege vulnerability in Yandex Browser for Windows prior to 21.9.0.390 allows a local, low privileged, attacker to execute arbitary code with the SYSTEM privileges through manipulating files in directory with insecure permissions during Yandex Browser update process."}], "problemTypes": [{"descriptions": [{"description": "Privilege escalation", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-06-15T19:06:06.000Z", "orgId": "a51c9250-e584-488d-808b-03e6f1386796", "shortName": "yandex"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://yandex.com/bugbounty/i/hall-of-fame-browser/"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "browser-security@yandex-team.ru", "ID": "CVE-2021-25263", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Yandex Browser (Desktop)", "version": {"version_data": [{"version_value": "All versions prior to version 21.9.0.390"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Local privilege vulnerability in Yandex Browser for Windows prior to 21.9.0.390 allows a local, low privileged, attacker to execute arbitary code with the SYSTEM privileges through manipulating files in directory with insecure permissions during Yandex Browser update process."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Privilege escalation"}]}]}, "references": {"reference_data": [{"name": "https://yandex.com/bugbounty/i/hall-of-fame-browser/", "refsource": "MISC", "url": "https://yandex.com/bugbounty/i/hall-of-fame-browser/"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T19:56:11.179Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://yandex.com/bugbounty/i/hall-of-fame-browser/"}]}]}, "cveMetadata": {"assignerOrgId": "a51c9250-e584-488d-808b-03e6f1386796", "assignerShortName": "yandex", "cveId": "CVE-2021-25263", "datePublished": "2021-08-17T18:34:04.000Z", "dateReserved": "2021-01-15T00:00:00.000Z", "dateUpdated": "2024-08-03T19:56:11.179Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Yandex Browser (Desktop)", "vendor": "n/a", "versions": [{"status": "affected", "version": "All versions prior to version 21.9.0.390"}]}], "source": "browser-security@yandex-team.ru"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:yandex:yandex_browser:*:*:*:*:*:windows:*:*", "matchCriteriaId": "21AC29BD-6018-46C2-9BE7-225090DDC637", "versionEndExcluding": "21.9.0.390", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Local privilege vulnerability in Yandex Browser for Windows prior to 21.9.0.390 allows a local, low privileged, attacker to execute arbitary code with the SYSTEM privileges through manipulating files in directory with insecure permissions during Yandex Browser update process."}, {"lang": "es", "value": "La vulnerabilidad de privilegios locales en Yandex Browser para Windows anterior a la versi\u00f3n 21.9.0.390 permite a un atacante local, con pocos privilegios, ejecutar c\u00f3digo arbitrario con los privilegios del SISTEMA a trav\u00e9s de la manipulaci\u00f3n de archivos en el directorio con permisos inseguros durante el proceso de actualizaci\u00f3n de Yandex Browser"}], "id": "CVE-2021-25263", "lastModified": "2026-06-17T03:41:44.000", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-08-17T19:15:08.103", "references": [{"source": "browser-security@yandex-team.ru", "tags": ["Vendor Advisory"], "url": "https://yandex.com/bugbounty/i/hall-of-fame-browser/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://yandex.com/bugbounty/i/hall-of-fame-browser/"}], "sourceIdentifier": "browser-security@yandex-team.ru", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-732"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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