{"id":"CVE-2025-5419","published":"2025-06-03T00:15:21Z","modified":"2026-06-17T09:47:52Z","title":"Google Chromium V8 Out-of-Bounds Read and Write Vulnerability","vendor":"Google","product":"Chromium V8","tier":"core","eol":null,"description":{"text":"Out of bounds read and write in V8 in Google Chrome prior to 137.0.7151.68 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is an out-of-bounds read and write in the V8 JavaScript engine of Google Chromium, the component that handles JavaScript execution in Chrome. An attacker who gets a user to open a crafted HTML page could potentially exploit the resulting heap corruption, requiring no authentication and only that the user visit the page.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:13:08Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.07486,"percentile":0.94462,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2025-06-05","dueDate":"2025-06-26","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.html;   https://nvd.nist.gov/vuln/detail/CVE-2025-5419\",","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-06-02","exploitedFirstSeen":"2025-06-02","ransomware":false,"evidence":[{"url":"https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop.html","date":"2025-06-02"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2025-06-02"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-06-05"},{"url":"https://cyble.com/blog/weekly-cyble-vulnerability-blog/","date":"2025-06-10"},{"url":"https://www.ptsecurity.com/ru-ru/research/analytics/aktual-nye-kiberugrozy-i-ii-kvartaly-2025-goda/#id8","date":"2025-08-28"},{"url":"https://www.enisa.europa.eu/sites/default/files/2025-10/ENISA%20Threat%20Landscape%202025.pdf","date":"2025-10-09"},{"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://cloud.google.com/blog/topics/threat-intelligence/2025-zero-day-review","date":"2026-03-05"},{"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-125","name":"Out-of-bounds Read"},{"id":"CWE-787","name":"Out-of-bounds Write"}],"references":[{"url":"https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop.html","tags":["Release Notes"]},{"url":"https://issues.chromium.org/issues/420636529","tags":["Permissions Required"]},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-5419","tags":["Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5419","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: Out-of-Bounds (Read and Write)","mappingType":"exploitation_technique","evidence":[],"comment":"Victims are tricked into visiting malicious web pages crafted to trigger exploitation of this vulnerability, leading to undefined behavior.","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: Out-of-Bounds (Read and Write)","mappingType":"exploitation_technique","evidence":[],"comment":"Victims are tricked into visiting malicious web pages crafted to trigger exploitation of this vulnerability, leading to undefined behavior.","confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2025-16695","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-16695","exploited":true,"exploitedSince":"2025-06-05","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":4,"skipped":0,"earliest":"2025-06-14","earliestUrl":"https://github.com/itsShotgun/chrome_v8_cve_checker","repos":[{"name":"mistymntncop/CVE-2025-5419","url":"https://github.com/mistymntncop/CVE-2025-5419","stars":95,"created":"2025-08-25"},{"name":"bjrjk/CVE-2025-5419","url":"https://github.com/bjrjk/CVE-2025-5419","stars":30,"created":"2026-01-29"},{"name":"itsShotgun/chrome_v8_cve_checker","url":"https://github.com/itsShotgun/chrome_v8_cve_checker","stars":2,"created":"2025-06-14"},{"name":"riemannj/CVE-2025-5419","url":"https://github.com/riemannj/CVE-2025-5419","stars":0,"created":"2025-08-13"}]},"first":{"date":"2025-06-14","source":"PoC-in-GitHub","url":"https://github.com/itsShotgun/chrome_v8_cve_checker"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189","T1203"],"provenance":"source"}],"timeline":[{"date":"2025-06-02","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop.html","provenance":"source"},{"date":"2025-06-03","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-5419","provenance":"source"},{"date":"2025-06-05","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2025-06-05","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-16695","provenance":"source"},{"date":"2025-06-14","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/itsShotgun/chrome_v8_cve_checker","provenance":"source"}],"speed":{"daysToPublicExploit":11,"firstExploitFrom":"PoC-in-GitHub","daysToKev":2},"priority":{"score":68.1,"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 515 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":18.89,"detail":"percentile 0.9446"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"4 PoC-in-GitHub repos"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-google-chrome-cwe-787"}}