{"schema_version":"public-product-v1.1","generated_at":"2026-06-10T08:39:16Z","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","advisory":{"id":"cisco-sa-webex-VObwRKWV","slug":"cisco-sa-webex-vobwrkwv","vendor":"Cisco","title":"Cisco Webex Meetings HTML Injection Vulnerability","summary":"A vulnerability in certain web pages of Cisco Webex Meetings could allow an unauthenticated, remote attacker to modify a web page in the context of a user's browser. The vulnerability is due to improper checks on parameter values in affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-VObwRKWV","severity":"Medium","published_at":"2021-04-07T16:00:00Z","updated_at":"2021-04-07T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-VObwRKWV","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-webex-VObwRKWV/csaf/cisco-sa-webex-VObwRKWV.json","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure."},"freshness":{"last_source_refreshed_at":"2026-05-26T00:00:03Z","latest_source_refresh_at":"2026-05-26T00:00:03Z","oldest_source_refresh_at":"2026-05-22T00:16:33Z","all_sources_fresh":false,"sources":[{"source":"cisco_advisories","label":"Cisco advisories","last_success_at":"2026-05-26T00:00:03Z","stale":true},{"source":"cisco_csaf","label":"Cisco CSAF","last_success_at":"2026-05-25T03:03:26Z","stale":true},{"source":"nvd_cves","label":"NVD CVEs","last_success_at":"2026-05-22T00:16:33Z","stale":true},{"source":"cisa_kev","label":"CISA KEV","last_success_at":"2026-05-22T00:16:34Z","stale":true},{"source":"first_epss","label":"EPSS","last_success_at":"2026-05-22T00:16:40Z","stale":true}]},"summary":{"cve_count":1,"visible_product_count":1,"public_evidence_count":1,"kev_count":0,"highest_epss":0.00356,"highest_cvss":4.7},"cves":[{"id":"CVE-2021-1420","description":"A vulnerability in certain web pages of Cisco Webex Meetings could allow an unauthenticated, remote attacker to modify a web page in the context of a user's browser. The vulnerability is due to improper checks on parameter values in affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.","severity":"MEDIUM","kev":false,"epss":{"score":0.00356,"percentile":0.57954,"score_date":"2026-05-21","updated_at":"2026-05-22T00:16:39Z"},"cvss_score":4.7,"cvss_source":"NVD","cwe":"CWE-80","published_at":"2021-04-08T04:15:13Z","modified_at":"2024-11-21T05:44:19Z"}],"public_evidence":[{"product":{"name":"Cisco Webex Meetings","slug":"cisco-webex-meetings","vendor":"Cisco"},"cve":{"id":"CVE-2021-1420"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-05-19T20:04:11Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Webex Meetings","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00356,"score_date":"2026-05-21","updated_at":"2026-05-22T00:16:39Z"},"cvss_score":4.7,"cvss_source":"NVD","published_at":"2021-04-07T16:00:00Z","updated_at":"2021-04-07T16:00:00Z","advisory_updated_at":"2021-04-07T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-VObwRKWV","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-VObwRKWV"},"row_display_order":1}]}