{"id":"CVE-2013-0074","kind":"vulnerability","aliases":["CVE-2013-0074"],"related":[],"title":"Microsoft Silverlight: Microsoft Silverlight Double Dereference Vulnerability","description":"Microsoft Silverlight 5, and 5 Developer Runtime, before 5.1.20125.0 does not properly validate pointers during HTML object rendering, which allows remote attackers to execute arbitrary code via a crafted Silverlight application, aka \"Silverlight Double Dereference Vulnerability.\"","summary":"Microsoft Silverlight mishandles pointers while rendering HTML objects, so a crafted Silverlight application can make the browser run attacker code. The flaw is listed in CISA's Known Exploited Vulnerabilities catalog with a ransomware tag.","severity":"critical","cvss":9.3,"epss":0.78885,"exploited":true,"exploited_at":"2022-05-25T00:00:00+00:00","products":[{"name":"Microsoft Silverlight","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browsers","exploited","other","ransomware","silverlight","windows"],"not_affected_if":["no-silverlight-installed"],"how_to_check":"Look for Silverlight installed on the machine (Programs and Features on Windows, or the browser add-ons list).","fix":"Remove Silverlight from the machine, since the product is end-of-life and CISA says to disconnect it if still in use.","status":"open","published_at":"2013-03-13T00:55:01+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:15:31+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"other","confidence":0.8,"triage":{"at":"2026-10-23T21:15:31Z","model":"claude-haiku-5-5","output":{"fix":"Remove Silverlight from the machine, since the product is end-of-life and CISA says to disconnect it if still in use.\nunknown","reach":"internet","impact":"high","summary":"Microsoft Silverlight mishandles pointers while rendering HTML objects, so a crafted Silverlight application can make the browser run attacker code. The flaw is listed in CISA's Known Exploited Vulnerabilities catalog with a ransomware tag.","category":"other","who_cares":["windows","browsers","silverlight"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs code on the victim's machine via a crafted web page","analyst_note":"","how_to_check":"Look for Silverlight installed on the machine (Programs and Features on Windows, or the browser add-ons list).\nunknown","needs_analyst":false,"not_affected_if":["no-silverlight-installed"],"user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.00046,"input_tokens":2849,"output_tokens":350,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-0074':10A,13A '-2013':9A,12A '5':59C,61C '5.1.20125.0':65C 'aka':88C 'allow':76C 'applic':34B,87C 'arbitrari':81C 'attack':40B,78C 'browser':16B,38B 'catalog':52B 'cisa':47B 'code':41B,82C 'craft':32B,85C 'cve':8A,11A 'derefer':6A,91C 'develop':62C 'doubl':5A,90C 'execut':80C 'exploit':17B,50B 'flaw':43B 'html':28B,72C 'known':49B 'list':45B 'make':36B 'microsoft':1A,3A,14A,22B,57C 'mishandl':24B 'object':29B,73C 'pointer':25B,70C 'proper':68C 'ransomwar':19B,55B 'remot':77C 'render':27B,74C 'run':39B 'runtim':63C 'silverlight':2A,4A,15A,20B,23B,33B,58C,86C,89C 'tag':56B 'valid':69C 'via':83C 'vulner':7A,51B,92C 'window':21B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2013-03-13T00:55:01+00:00","kev":{"dateAdded":"2022-05-25","dueDate":"2022-06-15","requiredAction":"The impacted product is end-of-life and should be disconnected if still in use.","knownRansomwareCampaignUse":"Known"},"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2013-0074","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2013-0074","severity":null,"published_at":"2022-05-25T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T10:39:06+00:00","note":null},{"source":"epss","external_id":"CVE-2013-0074","url":"https://api.first.org/data/v1/epss?cve=CVE-2013-0074","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:45+00:00","fetched_at":"2026-10-23T19:13:45+00:00","note":null},{"source":"nvd","external_id":"CVE-2013-0074","url":"https://nvd.nist.gov/vuln/detail/CVE-2013-0074","severity":null,"published_at":"2013-03-13T00:55:01+00:00","modified_at":"2026-08-14T05:16:52+00:00","first_seen_at":"2026-10-23T21:57:35+00:00","fetched_at":"2026-10-23T21:57:35+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}