{"id":"CVE-2019-8526","published":"2019-12-18T18:15:24Z","modified":"2026-06-17T02:42:06Z","title":"Apple macOS Use-After-Free Vulnerability","vendor":"Apple","product":"macOS","tier":"core","eol":null,"description":{"text":"A use after free issue was addressed with improved memory management. This issue is fixed in macOS Mojave 10.14.4. An application may be able to gain elevated privileges.","provenance":"source","from":"NVD"},"summary":{"text":"A use-after-free memory management flaw in Apple's macOS allows an application to gain elevated privileges. Exploitation requires a local attacker who can run an application on the system with low privileges and requires no user interaction.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:14:59Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.00701,"percentile":0.53089,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2023-04-17","dueDate":"2023-05-08","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://support.apple.com/en-us/HT209600; https://nvd.nist.gov/vuln/detail/CVE-2019-8526","provenance":"source"},"vulncheckKev":{"dateAdded":"2022-01-25","exploitedFirstSeen":"2022-01-25","ransomware":false,"evidence":[{"url":"https://www.welivesecurity.com/2022/01/25/watering-hole-deploys-new-macos-malware-dazzlespy-asia/","date":"2022-01-25"},{"url":"https://objective-see.org/blog/blog_0x71.html","date":"2023-01-01"},{"url":"https://www.group-ib.com/resources/research-hub/hi-tech-crime-trends-2022/","date":"2023-01-17"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2023-04-17"}],"evidenceTotal":4,"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://support.apple.com/HT209600","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/HT209600","tags":["Release Notes","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-8526","tags":["US Government Resource"]}],"techniques":[{"id":"T1068","name":"Exploitation for Privilege Escalation","tactics":["privilege-escalation"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Local app exploits memory bug to escalate privileges","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"An application may be able to gain elevated privileges","start":115,"end":169}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1548","name":"Abuse Elevation Control Mechanism","tactics":["privilege-escalation"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Elevated privileges obtained through the exploited use-after-free","mappingType":"primary_impact","evidence":[{"from":"description","quote":"An application may be able to gain elevated privileges","start":115,"end":169}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2019-17916","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-17916","exploited":true,"exploitedSince":"2023-04-17","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1068"],"provenance":"ai"},{"stage":"primary","techniques":["T1548"],"provenance":"ai"}],"timeline":[{"date":"2019-12-18","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-8526","provenance":"source"},{"date":"2022-01-25","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.welivesecurity.com/2022/01/25/watering-hole-deploys-new-macos-malware-dazzlespy-asia/","provenance":"source"},{"date":"2023-04-17","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2023-04-17","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-17916","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":1216},"priority":{"score":54.1,"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 1738 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":10.62,"detail":"percentile 0.5309"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.46,"detail":"base score 7.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-apple-ios-macos-cwe-416"}}