{"id":"CVE-2019-5786","published":"2019-06-27T17:15:13Z","modified":"2026-06-17T02:38:12Z","title":"Google Chrome Blink Use-After-Free Vulnerability","vendor":"Google","product":"Chrome Blink","tier":"core","eol":null,"description":{"text":"Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.","provenance":"source","from":"NVD"},"summary":{"text":"A use-after-free (object lifetime) flaw in the Blink rendering component of Google Chrome allows a remote attacker to potentially perform out-of-bounds memory access by luring a user to a crafted HTML page. The attack requires no authentication and no network-level access beyond delivering the page, but it does require user interaction, such as the victim visiting the malicious page.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:13:02Z"},"cvss":{"score":6.5,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.61085,"percentile":0.99155,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-05-23","dueDate":"2022-06-13","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2019-5786","provenance":"source"},"vulncheckKev":{"dateAdded":"2019-02-27","exploitedFirstSeen":"2019-02-27","ransomware":false,"evidence":[{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2019-02-27"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-05-23"}],"evidenceTotal":2,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"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"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"references":[{"url":"https://chromereleases.googleblog.com/2019/03/stable-channel-update-for-desktop.html","tags":["Release Notes","Vendor Advisory"]},{"url":"https://crbug.com/936448","tags":["Exploit","Issue Tracking"]},{"url":"https://chromereleases.googleblog.com/2019/03/stable-channel-update-for-desktop.html","tags":["Release Notes","Vendor Advisory"]},{"url":"https://crbug.com/936448","tags":["Exploit","Issue Tracking"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5786","tags":["US Government Resource"]}],"techniques":[{"id":"T1068","name":"Exploitation for Privilege Escalation","tactics":["privilege-escalation"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 1)","mappingType":"uncategorized","evidence":[],"confidence":"low","confidenceNote":"CTID attack_to_cve Phase 1 \"Uncategorized\" mapping (not staged by impact)"},{"id":"T1211","name":"Exploitation for Stealth","tactics":["stealth"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 1)","mappingType":"uncategorized","evidence":[],"confidence":"low","confidenceNote":"CTID attack_to_cve Phase 1 \"Uncategorized\" mapping (not staged by impact)"},{"id":"T1189","name":"Drive-by Compromise","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Malicious webpage delivered to victim's browser","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"via a crafted HTML page","start":148,"end":171}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1499.004","name":"Application or System Exploitation","tactics":["impact"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Memory corruption causing browser crash","mappingType":"primary_impact","evidence":[{"from":"description","quote":"potentially perform out of bounds memory access","start":100,"end":147}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[{"ecosystem":"npm","package":"puppeteer","vulnerableRanges":["<1.13.0"],"patched":["1.13.0"],"from":["GHSA-c2gp-86p4-5935"],"provenance":"source"}],"advisories":[{"id":"GHSA-c2gp-86p4-5935","url":"https://github.com/advisories/GHSA-c2gp-86p4-5935","severity":"MODERATE","ecosystem":"npm","package":"puppeteer","vulnerableRanges":["<1.13.0"],"patched":["1.13.0"],"provenance":"source","from":"GHSA"}],"euvd":{"id":"EUVD-2020-0957","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-0957","exploited":true,"exploitedSince":"2022-05-23","provenance":"source"},"exploits":[{"id":46812,"url":"https://www.exploit-db.com/exploits/46812","title":"Google Chrome 72.0.3626.119 - 'FileReader' Use-After-Free (Metasploit)","type":"remote","platform":"windows_x86","date":"2019-05-08","verified":true,"provenance":"source"},{"id":46812,"url":"https://www.exploit-db.com/exploits/46812","title":"Google Chrome 72.0.3626.119 - 'FileReader' Use-After-Free (Metasploit)","type":"remote","platform":"windows_x86","date":"2019-05-08","verified":true,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":2,"earliest":"2019-05-08"},"pocGithub":{"count":1,"skipped":0,"earliest":"2019-03-20","earliestUrl":"https://github.com/exodusintel/CVE-2019-5786","repos":[{"name":"exodusintel/CVE-2019-5786","url":"https://github.com/exodusintel/CVE-2019-5786","stars":255,"created":"2019-03-20"}]},"metasploit":[{"name":"Chrome 72.0.3626.119 FileReader UaF exploit for Windows 7 x86","module":"exploit/windows/browser/chrome_filereader_uaf","type":"exploit","disclosureDate":"2019-03-21","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/chrome_filereader_uaf.rb"}],"first":{"date":"2019-03-20","source":"PoC-in-GitHub","url":"https://github.com/exodusintel/CVE-2019-5786"},"provenance":"source"},"exploitRefs":["https://crbug.com/936448"],"flow":[{"stage":"exploitation","techniques":["T1189"],"provenance":"ai"},{"stage":"primary","techniques":["T1499.004"],"provenance":"ai"},{"stage":"related","techniques":["T1068","T1211"],"provenance":"source","lowConfidence":true}],"timeline":[{"date":"2019-02-27","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","provenance":"source"},{"date":"2019-03-20","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub; later: Metasploit 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0.9916"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit; 2 Exploit-DB entries; 1 PoC-in-GitHub repo; 1 Metasploit module"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":4.55,"detail":"base score 6.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-google-chrome-cwe-416"}}