{"id":"CVE-2025-10585","published":"2025-09-24T17:15:39Z","modified":"2026-07-14T15:21:36Z","title":"Google Chromium V8 Type Confusion Vulnerability","vendor":"Google","product":"Chromium V8","tier":"core","eol":null,"description":{"text":"Type confusion in V8 in Google Chrome prior to 140.0.7339.185 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)","provenance":"source","from":"NVD"},"summary":{"text":"Google Chromium's V8 JavaScript engine contains a type confusion flaw, where code can access a resource as an incompatible type, in the Chrome browser builds prior to 140.0.7339.185. A remote attacker who gets the user to load a crafted HTML page can potentially use it to corrupt heap memory, and no authentication or additional configuration is indicated.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-31T04:54:15Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.08974,"percentile":0.95253,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2025-09-23","dueDate":"2025-10-14","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_17.html ; https://nvd.nist.gov/vuln/detail/CVE-2025-10585","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-09-17","exploitedFirstSeen":"2025-09-17","ransomware":false,"evidence":[{"url":"https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_17.html?m=1","date":"2025-09-17"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2025-09-17"},{"url":"https://research.checkpoint.com/2025/22nd-september-threat-intelligence-report/","date":"2025-09-22"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-09-23"},{"url":"https://hs-8813571.f.hubspotemail.net/hubfs/8813571/PERISCOPE_VULNINTEL_20251007.pdf","date":"2025-10-07"},{"url":"https://www.rapid7.com/cdn/assets/bltbd2f1cd70f9e3e7f/691360b9c91291146f1a5308/threat-landscape-report-q3-2025.pdf","date":"2025-11-12"},{"url":"https://cyble.com/resources/research-reports/global-cybersecurity-report/","date":"2025-12-11"},{"url":"https://www.loginsoft.com/reports/annually/vulnerability-intelligence-report-2025","date":"2026-01-20"},{"url":"https://threatresearch.ext.hp.com/reviewing-zero-day-vulnerabilities-exploited-in-malware-campaigns-in-2025/","date":"2026-02-23"},{"url":"https://nsfocusglobal.com/wp-content/uploads/2026/06/2025-APT-Annual-Landscape-Report.pdf","date":"2026-06-22"}],"evidenceTotal":10,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-843","name":"Access of Resource Using Incompatible Type"}],"references":[{"url":"https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_17.html","tags":["Release Notes","Vendor Advisory"]},{"url":"https://issues.chromium.org/issues/445380761","tags":["Issue Tracking","Permissions Required"]},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-470355.html","tags":["Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-10585","tags":["US Government Resource"]}],"techniques":[{"id":"T1189","name":"Drive-by Compromise","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Malicious HTML page delivers exploit to browser","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page","start":62,"end":150}],"model":"claude-haiku-5-5","confidence":"low","confidenceNote":"server-side bug exploitable without user interaction; client-execution technique does not fit"},{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Exploit triggers code execution within browser process","mappingType":"primary_impact","evidence":[{"from":"description","quote":"Type confusion in V8 in Google Chrome prior to 140.0.7339.185","start":0,"end":61}],"model":"claude-haiku-5-5","confidence":"low","confidenceNote":"server-side bug exploitable without user interaction; client-execution technique does not fit"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2025-31006","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-31006","exploited":true,"exploitedSince":"2025-09-23","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":1,"skipped":0,"earliest":"2025-09-19","earliestUrl":"https://github.com/AdityaBhatt3010/CVE-2025-10585-The-Chrome-V8-Zero-Day","repos":[{"name":"AdityaBhatt3010/CVE-2025-10585-The-Chrome-V8-Zero-Day","url":"https://github.com/AdityaBhatt3010/CVE-2025-10585-The-Chrome-V8-Zero-Day","stars":13,"created":"2025-09-19"}]},"first":{"date":"2025-09-19","source":"PoC-in-GitHub","url":"https://github.com/AdityaBhatt3010/CVE-2025-10585-The-Chrome-V8-Zero-Day"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"related","techniques":["T1189","T1203"],"provenance":"ai","lowConfidence":true}],"timeline":[{"date":"2025-09-17","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_17.html?m=1","provenance":"source"},{"date":"2025-09-19","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/AdityaBhatt3010/CVE-2025-10585-The-Chrome-V8-Zero-Day","provenance":"source"},{"date":"2025-09-23","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2025-09-23","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-31006","provenance":"source"},{"date":"2025-09-24","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-10585","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"PoC-in-GitHub","daysToKev":null},"priority":{"score":68.9,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 409 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.05,"detail":"percentile 0.9525"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 PoC-in-GitHub repo"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-google-chrome-cwe-843"}}