{"id":"CVE-2020-8243","kind":"vulnerability","aliases":["CVE-2020-8243"],"related":[],"title":"Ivanti Pulse Connect Secure: Ivanti Pulse Connect Secure Code Execution Vulnerability","description":"Ivanti Pulse Connect Secure contains an unspecified vulnerability in the admin web interface that could allow an authenticated attacker to upload a custom template to perform code execution.\n\nCISA required action: Apply updates per vendor instructions.","summary":"Ivanti Pulse Connect Secure has a flaw in its admin web interface that lets a logged-in attacker upload a custom template and run code on the appliance. The vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, so attacks are happening in the wild.","severity":"high","cvss":7.2,"epss":0.90759,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"Ivanti Pulse Connect Secure","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","ivanti","pulse-connect-secure","self-hosted","vendor","vpn"],"not_affected_if":["no-pulse-connect-secure"],"how_to_check":"Check the Pulse Connect Secure version against the vendor advisory; the sources do not give affected version ranges.","fix":"Apply the Ivanti updates per vendor instructions, as CISA requires; the sources do not name a fixed version.","status":"open","published_at":"2020-09-30T18:15:29+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:41:50+00:00","updated_at":"2026-10-23T21:57:34+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-23T21:41:50Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Ivanti updates per vendor instructions, as CISA requires; the sources do not name a fixed version.\nunknown","reach":"network","impact":"high","summary":"Ivanti Pulse Connect Secure has a flaw in its admin web interface that lets a logged-in attacker upload a custom template and run code on the appliance. The vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, so attacks are happening in the wild.","category":"vendor","who_cares":["ivanti","pulse-connect-secure","vpn","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker runs code on the VPN appliance after logging into admin interface","analyst_note":"Find the Ivanti advisory and the affected and fixed version ranges, and confirm the admin interface exposure and any mitigation steps for CVE-2020-8243 at the CISA KEV link or Ivanti's security advisories page.","how_to_check":"Check the Pulse Connect Secure version against the vendor advisory; the sources do not give affected version ranges.\nunknown","needs_analyst":true,"not_affected_if":["no-pulse-connect-secure"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000513,"input_tokens":2856,"output_tokens":455,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2020':13A,16A '-8243':14A,17A 'action':110C 'admin':42B,90C 'allow':95C 'appli':111C 'applianc':61B 'attack':51B,74B,98C 'authent':97C 'catalog':72B 'cisa':67B,108C 'code':9A,58B,106C 'connect':3A,7A,20A,26B,35B,82C 'contain':84C 'could':94C 'custom':54B,102C 'cve':12A,15A 'execut':10A,107C 'exploit':22B,70B 'flaw':39B 'happen':76B 'host':30B 'instruct':115C 'interfac':44B,92C 'ivanti':1A,5A,18A,23B,33B,80C 'known':69B 'let':46B 'list':65B 'log':49B 'logged-in':48B 'per':113C 'perform':105C 'puls':2A,6A,25B,34B,81C 'pulse':19A 'pulse-connect-secur':24B 'requir':109C 'run':57B 'secur':4A,8A,27B,36B,83C 'secure':21A 'self':29B 'self-host':28B 'templat':55B,103C 'unspecifi':86C 'updat':112C 'upload':52B,100C 'vendor':31B,114C 'vpn':32B 'vulner':11A,63B,71B,87C 'web':43B,91C 'wild':79B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2020-09-30T18:15:29+00:00","kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2020-8243","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-8243","severity":null,"published_at":"2021-11-03T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:53+00:00","fetched_at":"2026-10-25T11:39:18+00:00","note":null},{"source":"epss","external_id":"CVE-2020-8243","url":"https://api.first.org/data/v1/epss?cve=CVE-2020-8243","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:43+00:00","fetched_at":"2026-10-23T19:13:43+00:00","note":null},{"source":"nvd","external_id":"CVE-2020-8243","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8243","severity":null,"published_at":"2020-09-30T18:15:29+00:00","modified_at":"2026-06-17T03:26:07+00:00","first_seen_at":"2026-10-23T21:57:34+00:00","fetched_at":"2026-10-23T21:57:34+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"}