{"id":"CVE-2013-3896","published":"2013-10-09T14:53:25Z","modified":"2026-06-16T23:55:58Z","title":"Microsoft Silverlight Information Disclosure Vulnerability","vendor":"Microsoft","product":"Silverlight","tier":"core","eol":{"product":"Microsoft Silverlight","since":"2021-10-12","note":"No security updates; remove it."},"description":{"text":"Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during access to Silverlight elements, which allows remote attackers to obtain sensitive information via a crafted Silverlight application, aka \"Silverlight Vulnerability.\"","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is improper validation of pointers during access to Silverlight elements in Microsoft Silverlight 5 before 5.1.20913.0, which is a weakness in the Silverlight component that handles those elements. An attacker who can get a victim to run a crafted Silverlight application can obtain sensitive information, and the attack requires user interaction and local access to the affected system.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:10:07Z"},"cvss":{"score":5.5,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.67959,"percentile":0.99319,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-05-25","dueDate":"2022-06-15","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-2013-3896","provenance":"source"},"vulncheckKev":{"dateAdded":"2021-02-11","exploitedFirstSeen":"2021-02-11","ransomware":true,"evidence":[{"url":"https://cybersecurityworks.com/pdf/ransomware/Spotlight_Ransomware2021.pdf","date":"2021-02-11"},{"url":"https://dl.acm.org/doi/pdf/10.1145/3465481.3465758","date":"2021-08-17"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-05-25"}],"evidenceTotal":3,"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-20","name":"Improper Input Validation"}],"references":[{"url":"http://www.us-cert.gov/ncas/alerts/TA13-288A","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-087","tags":["Patch","Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19003","tags":["Broken Link"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19055","tags":["Broken Link"]},{"url":"http://www.us-cert.gov/ncas/alerts/TA13-288A","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-087","tags":["Patch","Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19003","tags":["Broken Link"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19055","tags":["Broken Link"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3896","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 Silverlight content delivered to victim browser","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"via a crafted Silverlight application","start":180,"end":217}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1005","name":"Data from Local System","tactics":["collection"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Invalid pointer access leaks sensitive information","mappingType":"primary_impact","evidence":[{"from":"description","quote":"does not properly validate pointers during access to Silverlight elements","start":43,"end":116}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[{"id":"SRC-93c55e10ab45afc37c85","title":"Microsoft Security","publisher":"download.microsoft.com","url":"https://download.microsoft.com/download/E/B/0/EB0F50CC-989C-4B66-B7F6-68CD3DC90DE3/Microsoft_Security_Intelligence_Report_Volume_21_English.pdf","date":null,"mentions":[{"quote":"2423, CVE-2013-1493, and CVE-2012-1723), and Silverlight (CVE-2013-3896","start":100096,"end":100167},{"quote":"63\r\nCVE-2011-0097, 62\r\nCVE-2011-0611, 63\r\nCVE-2011-1823, 60, 61\r\nCVE-2012-0056, 60\r\nCVE-2012-0158, 62\r\nCVE-2012-0507, 57\r\nCVE-2012-1723, 56, 57, 58, 59\r\nCVE-2012-1889, 64\r\nCVE-2013-0074, 56\r\nCVE-2013-0422, 57, 59\r\nCVE-2013-1493, 56\r\nCVE-2013-2423, 56\r\nCVE-2013-2460, 56\r\nCVE-2013-2551, 56\r\nCVE-2013-3896,","start":261231,"end":261535}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2013-3828","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-3828","exploited":true,"exploitedSince":"2022-05-25","provenance":"source"},"exploits":[{"id":41702,"url":"https://www.exploit-db.com/exploits/41702","title":"Microsoft Silverlight - ScriptObject Unsafe Memory Access (MS13-022/MS13-087) (Metasploit)","type":"local","platform":"windows","date":"2013-03-12","verified":true,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2013-03-12"},"metasploit":[{"name":"MS13-022 Microsoft Silverlight ScriptObject Unsafe Memory Access","module":"exploit/windows/browser/ms13_022_silverlight_script_object","type":"exploit","disclosureDate":"2013-03-12","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/ms13_022_silverlight_script_object.rb"}],"first":{"date":"2013-03-12","source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/41702"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189"],"provenance":"ai"},{"stage":"primary","techniques":["T1005"],"provenance":"ai"}],"timeline":[{"date":"2013-03-12","kind":"exploit-public","label":"First public exploit: Exploit-DB (EDB-41702); later: Metasploit 2013-03-12","url":"https://www.exploit-db.com/exploits/41702","provenance":"source"},{"date":"2013-10-09","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2013-3896","provenance":"source"},{"date":"2021-02-11","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://cybersecurityworks.com/pdf/ransomware/Spotlight_Ransomware2021.pdf","provenance":"source"},{"date":"2022-05-25","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2022-05-25","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-3828","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"Exploit-DB","daysToKev":3150},"priority":{"score":65.6,"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 2086 days ago"},{"name":"Known ransomware use","points":10.0,"detail":"CISA KEV and VulnCheck KEV: Known"},{"name":"EPSS percentile","points":19.86,"detail":"percentile 0.9932"},{"name":"Named in threat reports","points":3.87,"detail":"1 report"},{"name":"Public exploit code","points":5.0,"detail":"1 Exploit-DB entry; 1 Metasploit module"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":3.85,"detail":"base score 5.5"},{"name":"End-of-life product","points":-15.0,"detail":"No patches exist; remove or isolate it"}]}}