{"id":"CVE-2026-11645","published":"2026-06-09T00:16:47Z","modified":"2026-07-23T08:10:00Z","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 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)","provenance":"source","from":"NVD"},"summary":{"text":"A flaw in Google Chromium's V8 JavaScript engine allows out-of-bounds reads and writes, which affect Chrome builds prior to 149.0.7827.103. An attacker can execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page, requiring no authentication and remote network access but user interaction.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:14:12Z"},"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":0.0244,"percentile":0.84285,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2026-06-09","dueDate":"2026-06-23","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/2026/06/stable-channel-update-for-desktop_0153744567.html ; https://issues.chromium.org/issues/506689381 ; https://nvd.nist.gov/vuln/detail/CVE-2026-11645","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-06-08","exploitedFirstSeen":"2026-06-08","ransomware":false,"evidence":[{"url":"https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html","date":"2026-06-08"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2026-06-08"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-06-09"},{"url":"https://www.recordedfuture.com/blog/june-2026-cve-landscape","date":"2026-07-10"},{"url":"https://ti.qianxin.com/uploads/2026/10/29/20ab59a356a884498644cff73d47a13a.pdf","date":"2026-10-29"}],"evidenceTotal":5,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 31, 2026","url":"https://otx.alienvault.com/pulse/6ae4aefab0c2191cecd41862","created":"2026-10-30"},{"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"}],"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/2026/06/stable-channel-update-for-desktop_0153744567.html","tags":["Release Notes","Vendor Advisory"]},{"url":"https://issues.chromium.org/issues/506689381","tags":["Permissions Required"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-11645","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: Victim visits crafted page triggering browser exploit","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"via a crafted HTML page","start":145,"end":168}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Code execution within browser renderer process","mappingType":"primary_impact","evidence":[{"from":"description","quote":"execute arbitrary code inside a sandbox","start":105,"end":144}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-35245","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-35245","exploited":true,"exploitedSince":"2026-06-09","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":3,"skipped":1,"earliest":"2026-06-10","earliestUrl":"https://github.com/fevar54/CVE-2026-11645-Out-of-bounds-Read-Write","repos":[{"name":"fevar54/CVE-2026-11645-Out-of-bounds-Read-Write","url":"https://github.com/fevar54/CVE-2026-11645-Out-of-bounds-Read-Write","stars":3,"created":"2026-06-10"},{"name":"0xBlackash/CVE-2026-11645","url":"https://github.com/0xBlackash/CVE-2026-11645","stars":1,"created":"2026-06-11"},{"name":"emlinhax/CVE-2026-11645-poc","url":"https://github.com/emlinhax/CVE-2026-11645-poc","stars":0,"created":"2026-10-21"}]},"first":{"date":"2026-06-10","source":"PoC-in-GitHub","url":"https://github.com/fevar54/CVE-2026-11645-Out-of-bounds-Read-Write"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189"],"provenance":"ai"},{"stage":"primary","techniques":["T1203"],"provenance":"ai"}],"timeline":[{"date":"2026-06-08","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html","provenance":"source"},{"date":"2026-06-09","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11645","provenance":"source"},{"date":"2026-06-09","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2026-06-09","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-35245","provenance":"source"},{"date":"2026-06-10","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/fevar54/CVE-2026-11645-Out-of-bounds-Read-Write","provenance":"source"}],"speed":{"daysToPublicExploit":1,"firstExploitFrom":"PoC-in-GitHub","daysToKev":0},"priority":{"score":71.0,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":5.0,"detail":"added 145 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":16.86,"detail":"percentile 0.8428"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"3 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"}}