{"cve":{"cve_id":"CVE-2011-2039","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.69959,"epss_percentile":0.99337,"epss_as_of":"2026-09-15","description":"The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client) before 2.3.185 on Windows, and on Windows Mobile, downloads a client executable file (vpndownloader.exe) without verifying its authenticity, which allows remote attackers to execute arbitrary code via the url property to a certain ActiveX control in vpnweb.ocx, aka Bug ID CSCsy00904.","published_at":"2011-06-02T19:00:00Z","last_modified_at":"2026-06-16T23:30:37.463000Z","cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-20"],"nvd_references":["http://osvdb.org/72714","http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtml","http://securityreason.com/securityalert/8272","http://www.securitytracker.com/id?1025591","http://www.kb.cert.org/vuls/id/490097","http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=909","https://exchange.xforce.ibmcloud.com/vulnerabilities/67739"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:05:52.397060Z"},"effective_severity":null,"badges":["exploit","epss"],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"anyconnect-secure-mobility-client","product_name":"anyconnect_secure_mobility_client","version_start":null,"version_start_inclusive":null,"version_end":"2.3","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:anyconnect_secure_mobility_client:*:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"anyconnect-secure-mobility-client","product_name":"anyconnect_secure_mobility_client","version_start":"2.0","version_start_inclusive":true,"version_end":"2.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.0:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"anyconnect-secure-mobility-client","product_name":"anyconnect_secure_mobility_client","version_start":"2.1","version_start_inclusive":true,"version_end":"2.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.1:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"anyconnect-secure-mobility-client","product_name":"anyconnect_secure_mobility_client","version_start":"2.2","version_start_inclusive":true,"version_end":"2.2","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"anyconnect-secure-mobility-client","product_name":"anyconnect_secure_mobility_client","version_start":"2.2.128","version_start_inclusive":true,"version_end":"2.2.128","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2.128:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"anyconnect-secure-mobility-client","product_name":"anyconnect_secure_mobility_client","version_start":"2.2.133","version_start_inclusive":true,"version_end":"2.2.133","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2.133:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"anyconnect-secure-mobility-client","product_name":"anyconnect_secure_mobility_client","version_start":"2.2.136","version_start_inclusive":true,"version_end":"2.2.136","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2.136:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"anyconnect-secure-mobility-client","product_name":"anyconnect_secure_mobility_client","version_start":"2.2.140","version_start_inclusive":true,"version_end":"2.2.140","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:anyconnect_secure_mobility_client:2.2.140:*:*:*:*:*:*:*"}],"exploit_refs":[{"source":"exploit-db","kind":"exploit-db","url":"https://www.exploit-db.com/exploits/17366","title":"Cisco AnyConnect VPN Client - ActiveX URL Property Download and Execute (Metasploit)","author":"Metasploit","disclosed_at":"2011-06-06"}],"news":[],"references":[{"url":"http://osvdb.org/72714","source_type":"MISC","tags":[]},{"url":"http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtml","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"http://securityreason.com/securityalert/8272","source_type":"MISC","tags":[]},{"url":"http://www.securitytracker.com/id?1025591","source_type":"MISC","tags":[]},{"url":"http://www.kb.cert.org/vuls/id/490097","source_type":"MISC","tags":[]},{"url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=909","source_type":"MISC","tags":[]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/67739","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2011-06-02T19:00:00Z","label":"CVE published","source":null},{"type":"exploit_known","at":"2011-06-06T00:00:00Z","label":"Public exploit available","source":"exploit-db"}]}