{"id":"CVE-2015-5122","published":"2015-07-14T10:59:00Z","modified":"2026-06-17T00:28:30Z","title":"Adobe Flash Player Use-After-Free Vulnerability","vendor":"Adobe","product":"Flash Player","tier":"core","eol":{"product":"Adobe Flash Player","since":"2020-12-31","note":"No security updates; remove it."},"description":{"text":"Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13.x through 13.0.0.302 on Windows and OS X, 14.x through 18.0.0.203 on Windows and OS X, 11.x through 11.2.202.481 on Linux, and 12.x through 18.0.0.204 on Linux Chrome installations allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted Flash content that leverages improper handling of the opaqueBackground property, as exploited in the wild in July 2015.","provenance":"source","from":"NVD"},"summary":{"text":"Adobe Flash Player contains a use-after-free vulnerability in the DisplayObject class of its ActionScript 3 implementation, triggered through improper handling of the opaqueBackground property. A remote attacker can execute arbitrary code or cause a denial of service via crafted Flash content, requiring no authentication, no user interaction, and no special configuration beyond the affected Flash Player versions.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:03:58Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.87033,"percentile":0.99746,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-04-13","dueDate":"2022-05-04","ransomware":false,"requiredAction":"The impacted product is end-of-life and should be disconnected if still in use.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2015-5122","provenance":"source"},"vulncheckKev":{"dateAdded":"2015-07-05","exploitedFirstSeen":"2015-07-05","ransomware":true,"evidence":[{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2015-07-05"},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-5122","date":"2015-07-14"},{"url":"https://resources.infosecinstitute.com/topic/the-hacking-team-hack-when-hackers-have-become-the-target/","date":"2015-07-21"},{"url":"https://www.trendmicro.com/en_us/research/15/g/hacking-team-leak-uncovers-another-windows-zero-day-ms-releases-patch.html","date":"2015-07-21"},{"url":"https://paper.seebug.org/papers/APT/APT_CyberCriminal_Campagin/2015/Aug.10.The_Italian_Connection_An_analysis_of_exploit_supply_chains_and_digital_quartermasters/HTExploitTelemetry.pdf","date":"2015-08-10"},{"url":"https://securelist.com/kaspersky-security-bulletin-2015-overall-statistics-for-2015/73038/","date":"2015-12-15"},{"url":"https://freebeacon.com/wp-content/uploads/2016/02/Report_lowres.pdf","date":"2016-02-03"},{"url":"https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/terror-exploit-kit-more-like-error-exploit-kit/","date":"2017-01-09"},{"url":"https://www2.fireeye.com/rs/848-DID-242/images/rpt_APT37.pdf","date":"2018-02-04"},{"url":"https://unit42.paloaltonetworks.com/unit42-the-old-and-new-current-trends-in-web-based-threats/","date":"2018-06-20"}],"evidenceTotal":16,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev 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Advisory"]},{"url":"https://perception-point.io/new/breaking-cfi.php","tags":["Broken Link","Third Party Advisory"]},{"url":"https://security.gentoo.org/glsa/201508-01","tags":["Third Party Advisory"]},{"url":"https://www.exploit-db.com/exploits/37599/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.fireeye.com/blog/threat-research/2015/07/cve-2015-5122_-_seco.html","tags":["Broken Link","Third Party Advisory"]},{"url":"https://github.com/cisagov/vulnrichment/issues/196","tags":["Issue Tracking"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-5122","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: Malicious Flash content delivered to victims' browsers","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"via crafted Flash content that leverages improper handling of the opaqueBackground property","start":404,"end":495}],"model":"claude-haiku-5-5","confidence":"low","confidenceNote":"server-side bug exploitable without user interaction; client-execution technique does not fit"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Arbitrary code execution achieved through memory corruption","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allows remote attackers to execute arbitrary code","start":305,"end":354}],"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 can crash the application","mappingType":"primary_impact","evidence":[{"from":"description","quote":"or cause a denial of service (memory corruption)","start":355,"end":403}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[{"id":"SRC-ff264eaf7a9f69a48903","title":"The Overlooked North Korean Actor","publisher":"services.google.com","url":"https://services.google.com/fh/files/misc/apt37-reaper-the-overlooked-north-korean-actor.pdf","date":null,"mentions":[{"quote":"CVE-2015-5122","start":9103,"end":9116}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2015-5137","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-5137","exploited":true,"exploitedSince":"2022-04-13","provenance":"source"},"exploits":[{"id":37599,"url":"https://www.exploit-db.com/exploits/37599","title":"Adobe Flash - opaqueBackground Use-After-Free (Metasploit)","type":"remote","platform":"windows","date":"2015-07-13","verified":true,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2015-07-13"},"metasploit":[{"name":"Adobe Flash opaqueBackground Use After 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it"}]},"lineage":{"familyId":"fam-class-adobe-flash-player-cwe-416"}}