{"id":"CVE-2025-6554","published":"2025-06-30T22:15:29Z","modified":"2026-06-17T10:02:08Z","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 138.0.7204.96 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)","provenance":"source","from":"NVD"},"summary":{"text":"A type confusion flaw in the V8 JavaScript engine of Google Chrome (Chromium V8 component) allows a remote attacker to perform arbitrary reads and writes by tricking a user into loading a crafted HTML page. The attack requires no privileges or authentication, but the victim must interact with the page, such as by visiting it.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-31T04:54:46Z"},"cvss":{"score":8.1,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.14142,"percentile":0.96571,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2025-07-02","dueDate":"2025-07-23","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/2025/06/stable-channel-update-for-desktop_30.html?m=1 ; https://nvd.nist.gov/vuln/detail/CVE-2025-6554","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-06-30","exploitedFirstSeen":"2025-06-30","ransomware":false,"evidence":[{"url":"https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.html","date":"2025-06-30"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2025-06-30"},{"url":"https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnotes-security#july-1-2025","date":"2025-07-01"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-07-02"},{"url":"https://ti.qianxin.com/blog/articles/a-brief-analysis-of-chrome-0day-cve-2025-6554-en/","date":"2025-07-21"},{"url":"https://www.rapid7.com/cdn/assets/bltbd2f1cd70f9e3e7f/691360b9c91291146f1a5308/threat-landscape-report-q3-2025.pdf","date":"2025-11-12"},{"url":"https://cloud.google.com/blog/topics/threat-intelligence/intellexa-zero-day-exploits-continue","date":"2025-12-03"},{"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/2025/06/stable-channel-update-for-desktop_30.html","tags":["Vendor Advisory"]},{"url":"https://issues.chromium.org/issues/427663123","tags":["Permissions Required"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6554","tags":["US Government Resource"]}],"techniques":[{"id":"T1189","name":"Drive-by Compromise","tactics":["initial-access"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Type Confusion","mappingType":"exploitation_technique","evidence":[],"comment":"Victims are tricked into visiting malicious web pages crafted to trigger memory corruption, which can lead to arbitrary code execution.","confidence":"high"},{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Type Confusion","mappingType":"exploitation_technique","evidence":[],"comment":"Victims are tricked into visiting malicious web pages crafted to trigger memory corruption, which can lead to arbitrary code execution.","confidence":"high"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Type Confusion","mappingType":"primary_impact","evidence":[],"comment":"Victims are tricked into visiting malicious web pages crafted to trigger memory corruption, which can lead to arbitrary code execution.","confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2025-19675","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-19675","exploited":true,"exploitedSince":"2025-07-02","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":7,"skipped":1,"earliest":"2025-07-05","earliestUrl":"https://github.com/gmh5225/CVE-2025-6554-2","repos":[{"name":"mistymntncop/CVE-2025-6554","url":"https://github.com/mistymntncop/CVE-2025-6554","stars":45,"created":"2025-10-05"},{"name":"aklnjakln/CVE-2025-6554","url":"https://github.com/aklnjakln/CVE-2025-6554","stars":31,"created":"2025-11-25"},{"name":"Muhammednihalmp/Google-chrome-zero-day","url":"https://github.com/Muhammednihalmp/Google-chrome-zero-day","stars":13,"created":"2025-11-09"},{"name":"jopraveen/CVE-2025-6554","url":"https://github.com/jopraveen/CVE-2025-6554","stars":5,"created":"2025-10-14"},{"name":"gmh5225/CVE-2025-6554-2","url":"https://github.com/gmh5225/CVE-2025-6554-2","stars":2,"created":"2025-07-05"}]},"first":{"date":"2025-07-05","source":"PoC-in-GitHub","url":"https://github.com/gmh5225/CVE-2025-6554-2"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189","T1203"],"provenance":"source"},{"stage":"primary","techniques":["T1059"],"provenance":"source"}],"timeline":[{"date":"2025-06-30","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6554","provenance":"source"},{"date":"2025-06-30","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.html","provenance":"source"},{"date":"2025-07-02","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2025-07-02","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-19675","provenance":"source"},{"date":"2025-07-05","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/gmh5225/CVE-2025-6554-2","provenance":"source"}],"speed":{"daysToPublicExploit":5,"firstExploitFrom":"PoC-in-GitHub","daysToKev":2},"priority":{"score":68.0,"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 488 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.31,"detail":"percentile 0.9657"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"7 PoC-in-GitHub repos"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.67,"detail":"base score 8.1"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-google-chrome-cwe-843"}}