CVE-2021-25262

Yandex Browser for Android prior to version 21.3.0 allows remote attackers to perform IDN homograph attack.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://yandex.com/bugbounty/i/hall-of-fame-browser/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:yandex:yandex_browser:*:*:*:*:*:*:*:*

cpe:2.3:o:google:android:-:*:*:*:*:*:*:*

History

10 Jun 2025, 15:49

Type	Values Removed	Values Added
References	~~() https://yandex.com/bugbounty/i/hall-of-fame-browser/ -~~	() https://yandex.com/bugbounty/i/hall-of-fame-browser/ - Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.4
First Time		Google Google android Yandex yandex Browser Yandex
CPE		cpe:2.3:a:yandex:yandex_browser:::::::: cpe:2.3:o:google:android:-:::::::*
Summary		(es) Yandex Browser para Android anterior a la versión 21.3.0 permite a atacantes remotos realizar ataques de homógrafos IDN.

21 May 2025, 07:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-05-21 07:16

Updated : 2025-06-10 15:49

NVD link : CVE-2021-25262

Mitre link : CVE-2021-25262

CVE.ORG link : CVE-2021-25262

JSON object : View

Products Affected

google

android

yandex

yandex_browser

CWE

CWE-116

Improper Encoding or Escaping of Output

{"id": "CVE-2021-25262", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "browser-security@yandex-team.ru", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "ACTIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2025-05-21T07:16:00.653", "references": [{"url": "https://yandex.com/bugbounty/i/hall-of-fame-browser/", "tags": ["Vendor Advisory"], "source": "browser-security@yandex-team.ru"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "browser-security@yandex-team.ru", "description": [{"lang": "en", "value": "CWE-116"}]}], "descriptions": [{"lang": "en", "value": "Yandex Browser for Android prior to version 21.3.0 allows remote attackers to perform IDN homograph attack."}, {"lang": "es", "value": "Yandex Browser para Android anterior a la versi\u00f3n 21.3.0 permite a atacantes remotos realizar ataques de hom\u00f3grafos IDN."}], "lastModified": "2025-06-10T15:49:44.813", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:yandex:yandex_browser:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0135C6B0-3140-4C01-B6E6-BFE83F2FF008", "versionEndExcluding": "21.3.0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:google:android:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "F8B9FEC8-73B6-43B8-B24E-1F7C20D91D26"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "browser-security@yandex-team.ru"}

5.4 /10