{"history":[{"alert":0,"cve":"CVE-2021-22893","id":22126,"kind":"epss","observed_at":1794500401,"payload":"{\"date\": \"2026-11-12\", \"epss\": 0.47508, \"percentile\": 0.98861}"},{"alert":0,"cve":"CVE-2021-22893","id":19745,"kind":"epss","observed_at":1794327601,"payload":"{\"date\": \"2026-11-10\", \"epss\": 0.47508, \"percentile\": 0.98853}"},{"alert":0,"cve":"CVE-2021-22893","id":17711,"kind":"epss","observed_at":1794241201,"payload":"{\"date\": \"2026-11-09\", \"epss\": 0.47508, \"percentile\": 0.98851}"},{"alert":0,"cve":"CVE-2021-22893","id":15775,"kind":"epss","observed_at":1794154800,"payload":"{\"date\": \"2026-11-08\", \"epss\": 0.47508, \"percentile\": 0.98851}"},{"alert":0,"cve":"CVE-2021-22893","id":13753,"kind":"epss","observed_at":1794068402,"payload":"{\"date\": \"2026-11-07\", \"epss\": 0.47508, \"percentile\": 0.9885}"},{"alert":0,"cve":"CVE-2021-22893","id":11535,"kind":"epss","observed_at":1793982001,"payload":"{\"date\": \"2026-11-06\", \"epss\": 0.47172, \"percentile\": 0.98841}"},{"alert":0,"cve":"CVE-2021-22893","id":9521,"kind":"epss","observed_at":1793938800,"payload":"{\"date\": \"2026-11-05\", \"epss\": 0.47172, \"percentile\": 0.9884}"},{"alert":1,"cve":"CVE-2021-22893","id":9257,"kind":"cna","observed_at":1793917201,"payload":"{\"containers\": {\"adp\": [{\"providerMetadata\": {\"dateUpdated\": \"2024-08-03T18:58:24.775Z\", \"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\"}, \"references\": [{\"url\": \"https://www.kb.cert.org/vuls/id/213092\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://blog.pulsesecure.net/pulse-connect-secure-security-update/\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://kb.cert.org/vuls/id/213092\"}], \"title\": \"CVE Program Container\"}, {\"metrics\": [{\"cvssV3_1\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"NETWORK\", \"availabilityImpact\": \"HIGH\", \"baseScore\": 10, \"baseSeverity\": \"CRITICAL\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"scope\": \"CHANGED\", \"userInteraction\": \"NONE\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H\", \"version\": \"3.1\"}}, {\"other\": {\"content\": {\"id\": \"CVE-2021-22893\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"role\": \"CISA Coordinator\", \"timestamp\": \"2021-04-20T00:00:00+00:00\", \"version\": \"2.0.3\"}, \"type\": \"ssvc\"}}, {\"other\": {\"content\": {\"dateAdded\": \"2021-11-03\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893\"}, \"type\": \"kev\"}}], \"providerMetadata\": {\"dateUpdated\": \"2026-08-12T03:55:19.358Z\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\"}, \"references\": [{\"tags\": [\"government-resource\"], \"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2021-11-03T00:00:00.000Z\", \"value\": \"CVE-2021-22893 added to CISA KEV\"}], \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"affected\": [{\"product\": \"Pulse Connect Secure\", \"vendor\": \"n/a\", \"versions\": [{\"status\": \"affected\", \"version\": \"PCS 9.0R3 or above, PCS 9.1R1 and above\"}]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.\"}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-287\", \"description\": \"Improper Authentication - Generic (CWE-287)\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2021-04-23T16:29:43.000Z\", \"orgId\": \"36234546-b8fa-4601-9d6f-f4e334aa8ea1\", \"shortName\": \"hackerone\"}, \"references\": [{\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://blog.pulsesecure.net/pulse-connect-secure-security-update/\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://kb.cert.org/vuls/id/213092\"}], \"x_legacyV4Record\": {\"CVE_data_meta\": {\"ASSIGNER\": \"support@hackerone.com\", \"ID\": \"CVE-2021-22893\", \"STATE\": \"PUBLIC\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"product_name\": \"Pulse Connect Secure\", \"version\": {\"version_data\": [{\"version_value\": \"PCS 9.0R3 or above, PCS 9.1R1 and above\"}]}}]}, \"vendor_name\": \"n/a\"}]}}, \"data_format\": \"MITRE\", \"data_type\": \"CVE\", \"data_version\": \"4.0\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"Improper Authentication - Generic (CWE-287)\"}]}]}, \"references\": {\"reference_data\": [{\"name\": \"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/\", \"refsource\": \"MISC\", \"url\": \"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/\"}, {\"name\": \"https://blog.pulsesecure.net/pulse-connect-secure-security-update/\", \"refsource\": \"MISC\", \"url\": \"https://blog.pulsesecure.net/pulse-connect-secure-security-update/\"}, {\"name\": \"https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html\", \"refsource\": \"MISC\", \"url\": \"https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html\"}, {\"name\": \"https://kb.cert.org/vuls/id/213092\", \"refsource\": \"MISC\", \"url\": \"https://kb.cert.org/vuls/id/213092\"}]}}}}, \"cveMetadata\": {\"assignerOrgId\": \"36234546-b8fa-4601-9d6f-f4e334aa8ea1\", \"assignerShortName\": \"hackerone\", \"cveId\": \"CVE-2021-22893\", \"datePublished\": \"2021-04-23T16:29:43.000Z\", \"dateReserved\": \"2021-01-06T00:00:00.000Z\", \"dateUpdated\": \"2026-08-12T03:55:19.358Z\", \"state\": \"PUBLISHED\"}, \"dataType\": \"CVE_RECORD\", \"dataVersion\": \"5.2\"}"},{"alert":0,"cve":"CVE-2021-22893","id":7069,"kind":"epss","observed_at":1793809200,"payload":"{\"date\": \"2026-11-04\", \"epss\": 0.47172, \"percentile\": 0.98839}"},{"alert":0,"cve":"CVE-2021-22893","id":4846,"kind":"epss","observed_at":1793722800,"payload":"{\"date\": \"2026-11-03\", \"epss\": 0.47172, \"percentile\": 0.98837}"},{"alert":0,"cve":"CVE-2021-22893","id":2628,"kind":"epss","observed_at":1793665375,"payload":"{\"date\": \"2026-11-02\", \"epss\": 0.47172, \"percentile\": 0.98836}"},{"alert":1,"cve":"CVE-2021-22893","id":1697,"kind":"kev","observed_at":1793665375,"payload":"{\"cveID\": \"CVE-2021-22893\", \"cwes\": [\"CWE-287\"], \"dateAdded\": \"2021-11-03\", \"dueDate\": \"2022-05-03\", \"forensicTriage\": \"No\", \"knownRansomwareCampaignUse\": \"Known\", \"notes\": \"Reference CISA's ED 21-03 (https://www.cisa.gov/news-events/directives/ed-21-03-mitigate-pulse-connect-secure-product-vulnerabilities) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 21-03. https://nvd.nist.gov/vuln/detail/CVE-2021-22893\", \"product\": \"Pulse Connect Secure\", \"requiredAction\": \"Apply updates per vendor instructions.\", \"shortDescription\": \"Ivanti Pulse Connect Secure contains a use-after-free vulnerability that allow a remote, unauthenticated attacker to execute code via license services.\", \"vendorProject\": \"Ivanti\", \"vulnerabilityName\": \"Ivanti Pulse Connect Secure Use-After-Free Vulnerability\"}"}],"record":{"affected":[{"product":"Pulse Connect Secure","vendor":"n/a","versions":[{"status":"affected","version":"PCS 9.0R3 or above, PCS 9.1R1 and above"}]}],"cna":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-03T18:58:24.775Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"url":"https://www.kb.cert.org/vuls/id/213092"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://blog.pulsesecure.net/pulse-connect-secure-security-update/"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://kb.cert.org/vuls/id/213092"}],"title":"CVE Program Container"},{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}},{"other":{"content":{"id":"CVE-2021-22893","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2021-04-20T00:00:00+00:00","version":"2.0.3"},"type":"ssvc"}},{"other":{"content":{"dateAdded":"2021-11-03","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893"},"type":"kev"}}],"providerMetadata":{"dateUpdated":"2026-08-12T03:55:19.358Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["government-resource"],"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893"}],"timeline":[{"lang":"en","time":"2021-11-03T00:00:00.000Z","value":"CVE-2021-22893 added to CISA KEV"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"Pulse Connect Secure","vendor":"n/a","versions":[{"status":"affected","version":"PCS 9.0R3 or above, PCS 9.1R1 and above"}]}],"descriptions":[{"lang":"en","value":"Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","description":"Improper Authentication - Generic (CWE-287)","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2021-04-23T16:29:43.000Z","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","shortName":"hackerone"},"references":[{"tags":["x_refsource_MISC"],"url":"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/"},{"tags":["x_refsource_MISC"],"url":"https://blog.pulsesecure.net/pulse-connect-secure-security-update/"},{"tags":["x_refsource_MISC"],"url":"https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"},{"tags":["x_refsource_MISC"],"url":"https://kb.cert.org/vuls/id/213092"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"support@hackerone.com","ID":"CVE-2021-22893","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Pulse Connect Secure","version":{"version_data":[{"version_value":"PCS 9.0R3 or above, PCS 9.1R1 and above"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Improper Authentication - Generic (CWE-287)"}]}]},"references":{"reference_data":[{"name":"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/","refsource":"MISC","url":"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/"},{"name":"https://blog.pulsesecure.net/pulse-connect-secure-security-update/","refsource":"MISC","url":"https://blog.pulsesecure.net/pulse-connect-secure-security-update/"},{"name":"https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html","refsource":"MISC","url":"https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"},{"name":"https://kb.cert.org/vuls/id/213092","refsource":"MISC","url":"https://kb.cert.org/vuls/id/213092"}]}}}},"cveMetadata":{"assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","assignerShortName":"hackerone","cveId":"CVE-2021-22893","datePublished":"2021-04-23T16:29:43.000Z","dateReserved":"2021-01-06T00:00:00.000Z","dateUpdated":"2026-08-12T03:55:19.358Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"cna_checked":1794370801,"cve":"CVE-2021-22893","description":"Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.","epss":{"date":"2026-11-12","epss":0.47508,"percentile":0.98861},"epss_checked":1794522003,"first_seen":1793665375,"kev":{"cveID":"CVE-2021-22893","cwes":["CWE-287"],"dateAdded":"2021-11-03","dueDate":"2022-05-03","forensicTriage":"No","knownRansomwareCampaignUse":"Known","notes":"Reference CISA's ED 21-03 (https://www.cisa.gov/news-events/directives/ed-21-03-mitigate-pulse-connect-secure-product-vulnerabilities) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 21-03. https://nvd.nist.gov/vuln/detail/CVE-2021-22893","product":"Pulse Connect Secure","requiredAction":"Apply updates per vendor instructions.","shortDescription":"Ivanti Pulse Connect Secure contains a use-after-free vulnerability that allow a remote, unauthenticated attacker to execute code via license services.","vendorProject":"Ivanti","vulnerabilityName":"Ivanti Pulse Connect Secure Use-After-Free Vulnerability"},"kev_checked":1794522003,"products":"n/a Pulse Connect Secure","references":["https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/","https://blog.pulsesecure.net/pulse-connect-secure-security-update/","https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html","https://kb.cert.org/vuls/id/213092","https://www.kb.cert.org/vuls/id/213092","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893"],"score":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","provider":"CISA-ADP","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"solutions":"","state":"PUBLISHED","title":"Ivanti Pulse Connect Secure Use-After-Free Vulnerability","updated_at":1794500401,"workarounds":""},"sources":[]}