{"id":"CVE-2010-3962","kind":"vulnerability","aliases":["CVE-2010-3962"],"related":[],"title":"Use-after-free vulnerability in Microsoft Internet Explorer 6, 7, and 8 allows remote attackers to execute arbitrary…","description":"Microsoft Internet Explorer contains an uninitialized memory corruption vulnerability that could allow for remote code execution. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.\n\nCISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","summary":"Microsoft Internet Explorer has an uninitialized memory corruption flaw that lets a crafted web page run code on the visiting machine. CISA lists it as actively exploited in the wild.","severity":"critical","cvss":9.3,"epss":null,"exploited":true,"exploited_at":"2025-10-06T00:00:00+00:00","products":[{"name":"Microsoft Internet Explorer","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft internet explorer","fixed":[],"affected":"= 6","ecosystem":"vendor"},{"name":"microsoft internet explorer","fixed":[],"affected":"= 7","ecosystem":"vendor"},{"name":"microsoft internet explorer","fixed":[],"affected":"= 8","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","internet-explorer","vendor","windows"],"not_affected_if":["no-ie-installed"],"how_to_check":"Check whether Internet Explorer is installed and used, for example with a software inventory or by looking for iexplore.exe on Windows hosts.","fix":"Stop using Internet Explorer and move users to a supported browser; apply the vendor mitigations CISA references if removal is not possible yet.","status":"open","published_at":"2010-11-05T17:00:02+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:44:41+00:00","updated_at":"2026-10-23T23:44:51+00:00","category":"vendor","confidence":0.7,"triage":{"at":"2026-10-23T20:44:41Z","model":"claude-haiku-5-5","output":{"fix":"Stop using Internet Explorer and move users to a supported browser; apply the vendor mitigations CISA references if removal is not possible yet.","reach":"internet","summary":"Microsoft Internet Explorer has an uninitialized memory corruption flaw that lets a crafted web page run code on the visiting machine. CISA lists it as actively exploited in the wild.","category":"vendor","who_cares":["internet-explorer","windows"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs code as the logged-in user after the victim visits a malicious page.","analyst_note":"Confirm the affected IE versions and the exact Microsoft advisory and patch status at the CISA KEV entry or the Microsoft security bulletin for CVE-2010-3962.","how_to_check":"Check whether Internet Explorer is installed and used, for example with a software inventory or by looking for iexplore.exe on Windows hosts.","needs_analyst":true,"not_affected_if":["no-ie-installed"],"user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000453,"input_tokens":2577,"output_tokens":390,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':123C '-2010':21A,24A '-3962':22A,25A '22':122C '6':10A '7':11A '8':13A 'action':113C 'activ':69B 'allow':14A,85C 'and/or':100C 'appli':114C 'applic':120C 'arbitrari':19A 'attack':16A 'bod':121C 'cisa':65B,111C 'cloud':126C 'code':60B,88C 'contain':77C 'corrupt':51B,81C 'could':84C,93C 'craft':56B 'cve':20A,23A 'discontinu':108C,129C 'end':96C,102C 'end-of-lif':95C 'end-of-servic':101C 'eo':105C 'eol':99C 'execut':18A,89C 'exploit':38B,70B 'explor':9A,41B,46B,76C 'explorer':28A,31A,34A,37A 'flaw':52B 'follow':119C 'free':4A 'guidanc':124C 'impact':91C 'instruct':118C 'internet':8A,27A,30A,33A,36A,40B,45B,75C 'internet-explor':39B 'let':54B 'life':98C 'list':66B 'machin':64B 'memori':50B,80C 'microsoft':7A,26A,29A,32A,35A,44B,74C 'mitig':115C,135C 'page':58B 'per':116C 'product':92C,109C,133C 'remot':15A,87C 'requir':112C 'run':59B 'servic':104C,127C 'unavail':137C 'uniniti':49B,79C 'use':2A,130C 'use-after-fre':1A 'user':106C 'util':110C 'vendor':42B,117C 'visit':63B 'vulner':5A,82C 'web':57B 'wild':73B 'window':43B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2010-11-05T17:00:02+00:00","kev":{"dateAdded":"2025-10-06","dueDate":"2025-10-27","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2010-3962","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2010-3962","severity":null,"published_at":"2025-10-06T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T10:39:04+00:00","note":null},{"source":"nvd","external_id":"CVE-2010-3962","url":"https://nvd.nist.gov/vuln/detail/CVE-2010-3962","severity":null,"published_at":"2010-11-05T17:00:02+00:00","modified_at":"2026-06-16T23:23:53+00:00","first_seen_at":"2026-10-23T23:44:51+00:00","fetched_at":"2026-10-23T23:44:51+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"}