{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-20306", "tracking": { "current_release_date": "2026-09-17T13:04:51.853034Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-20306", "initial_release_date": "2026-09-16T17:33:07.381328Z", "revision_history": [ { "date": "2026-09-16T17:33:07.381328Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-09-16T17:33:16.330157Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-09-16T17:39:10.467857Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (5).| References created (1).| CWES updated (1).| Unknown change." }, { "date": "2026-09-16T17:39:13.385570Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-09-16T18:10:12.800654Z", "number": "5", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| References created (1).| CWES updated (1)." }, { "date": "2026-09-16T18:10:19.761256Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-09-16T18:11:27.367478Z", "number": "7", "summary": "Source connected.| CVE status created. (valid)| CVSS created.| Products connected (5).| Product Remediations created (5).| References created (13)." }, { "date": "2026-09-16T18:11:32.285042Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-09-17T09:25:11.188141Z", "number": "9", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-09-17T13:01:27.723346Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)| Products connected (10).| References created (18)." }, { "date": "2026-09-17T13:01:37.257578Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-09-17T13:03:45.645577Z", "number": "12", "summary": "Source connected.| CVE status created. (valid)| Products connected (1).| References created (10)." } ], "status": "interim", "version": "12" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:cisco/3.4.0", "product": { "name": "vers:cisco/3.4.0", "product_id": "CSAFPID-9331425" } }, { "category": "product_version_range", "name": "vers:unknown/3.4.0", "product": { "name": "vers:unknown/3.4.0", "product_id": "CSAFPID-2982742" } } ], "category": "product_name", "name": "Cisco ISE Passive Identity Connector" }, { "branches": [ { "category": "product_version_range", "name": "vers:cisco/3.4 patch 4", "product": { "name": "vers:cisco/3.4 patch 4", "product_id": "CSAFPID-9331460" } }, { "category": "product_version_range", "name": "vers:cisco/3.4 patch 5", "product": { "name": "vers:cisco/3.4 patch 5", "product_id": "CSAFPID-9331464" } }, { "category": "product_version_range", "name": "vers:cisco/3.4 patch 6", "product": { "name": "vers:cisco/3.4 patch 6", "product_id": "CSAFPID-9331471" } }, { "category": "product_version_range", "name": "vers:cisco/3.5 patch 3", "product": { "name": "vers:cisco/3.5 patch 3", "product_id": "CSAFPID-9331467" } }, { "category": "product_version_range", "name": "vers:unknown/3.4patch4", "product": { "name": "vers:unknown/3.4patch4", "product_id": "CSAFPID-6046943" } }, { "category": "product_version_range", "name": "vers:unknown/3.4patch5", "product": { "name": "vers:unknown/3.4patch5", "product_id": "CSAFPID-6046948" } }, { "category": "product_version_range", "name": "vers:unknown/3.4patch6", "product": { "name": "vers:unknown/3.4patch6", "product_id": "CSAFPID-6620843" } }, { "category": "product_version_range", "name": "vers:unknown/3.5patch3", "product": { "name": "vers:unknown/3.5patch3", "product_id": "CSAFPID-6620158" } } ], "category": "product_name", "name": "Cisco Identity Services Engine Software" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-3055479", "product_identification_helper": { "cpe": "cpe:/a:cisco:secure_firewall_management_center:-" } } } ], "category": "product_name", "name": "Cisco Secure Firewall Management Center" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<3.1 patch 12", "product": { "name": "vers:unknown/<3.1 patch 12", "product_id": "CSAFPID-9336406" } }, { "category": "product_version_range", "name": "vers:unknown/<3.2 patch 11", "product": { "name": "vers:unknown/<3.2 patch 11", "product_id": "CSAFPID-9336400" } }, { "category": "product_version_range", "name": "vers:unknown/<3.3 patch 12", "product": { "name": "vers:unknown/<3.3 patch 12", "product_id": "CSAFPID-8844590" } }, { "category": "product_version_range", "name": "vers:unknown/<3.4 patch 7", "product": { "name": "vers:unknown/<3.4 patch 7", "product_id": "CSAFPID-8844591" } }, { "category": "product_version_range", "name": "vers:unknown/<3.5 patch 4", "product": { "name": "vers:unknown/<3.5 patch 4", "product_id": "CSAFPID-8476700" } }, { "category": "product_version_range", "name": "vers:unknown/pic <3.1 patch 12", "product": { "name": "vers:unknown/pic <3.1 patch 12", "product_id": "CSAFPID-9336401" } }, { "category": "product_version_range", "name": "vers:unknown/pic <3.2 patch 11", "product": { "name": "vers:unknown/pic <3.2 patch 11", "product_id": "CSAFPID-9336403" } }, { "category": "product_version_range", "name": "vers:unknown/pic <3.3 patch 12", "product": { "name": "vers:unknown/pic <3.3 patch 12", "product_id": "CSAFPID-9336402" } }, { "category": "product_version_range", "name": "vers:unknown/pic <3.4 patch 7", "product": { "name": "vers:unknown/pic <3.4 patch 7", "product_id": "CSAFPID-9336405" } }, { "category": "product_version_range", "name": "vers:unknown/pic <3.5 patch 4", "product": { "name": "vers:unknown/pic <3.5 patch 4", "product_id": "CSAFPID-9336404" } } ], "category": "product_name", "name": "Identity Services Engine (ISE)" } ], "category": "vendor", "name": "Cisco" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-20306", "cwe": { "id": "CWE-78", "name": "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')" }, "notes": [ { "category": "description", "text": "A vulnerability in the REST API of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials.\r\n\r\nThis vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending crafted commands to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a DoS condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-20306" }, { "category": "description", "text": "A vulnerability in the REST API of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials.\r\n\r\nThis vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending crafted commands to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a DoS condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-20306" }, { "category": "description", "text": "Multiple vulnerabilities in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to perform command injection attacks on an affected device and execute arbitrary commands as the root user. To exploit ", "title": "cisco - https://sec.cloudapps.cisco.com/security/center/publicationService.x?limit=20" }, { "category": "other", "text": "6.0", "title": "NCSC Score" }, { "category": "other", "text": "Is related to an uncommon product source, VENDOR FIX as product remediation category, There is product data available from source Certbundde, Is related to a product by vendor Cisco", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "There is cwe data available from source Nvd, The CVSS vector string contains AV:N (Attack Vector: Network)", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-2982742", "CSAFPID-6046943", "CSAFPID-6046948", "CSAFPID-6620158", "CSAFPID-6620843", "CSAFPID-9331425", "CSAFPID-9331460", "CSAFPID-9331464", "CSAFPID-9331467", "CSAFPID-9331471", "CSAFPID-8476700", "CSAFPID-8844590", "CSAFPID-8844591", "CSAFPID-9336400", "CSAFPID-9336401", "CSAFPID-9336402", "CSAFPID-9336403", "CSAFPID-9336404", "CSAFPID-9336405", "CSAFPID-9336406", "CSAFPID-3055479" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20306" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-20306" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-20306" }, { "category": "external", "summary": "Source - cisco", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-cmd-inj-e2CuZCYZ/csaf/cisco-sa-ise-cmd-inj-e2CuZCYZ.json" }, { "category": "external", "summary": "Source - cisco", "url": "https://sec.cloudapps.cisco.com/security/center/publicationService.x?limit=20" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0382" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3425.json" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3417.json" }, { "category": "external", "summary": "Reference - certbundde; cisco; cveprojectv5; nvd", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-cmd-inj-e2CuZCYZ" }, { "category": "external", "summary": "Reference - cisco", "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html" }, { "category": "external", "summary": "Reference - cisco", "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu26077" }, { "category": "external", "summary": "Reference - cisco", "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu43442" }, { "category": "external", "summary": "Reference - certbundde; cisco", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-ise-XU5EwX5T" }, { "category": "external", "summary": "Reference - cisco", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-notice-jfxK98ZP" }, { "category": "external", "summary": "Reference - cisco", "url": "https://sec.cloudapps.cisco.com/security/center/resources/risk-based-disclosure" }, { "category": "external", "summary": "Reference - cisco", "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html" }, { "category": "external", "summary": "Reference - cisco", "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes" }, { "category": "external", "summary": "Reference - cisco", "url": "https://www.cisco.com/c/en/us/support/index.html" }, { "category": "external", "summary": "Reference - cisco", "url": "https://www.cisco.com/c/en/us/support/security/identity-services-engine/series.html" }, { "category": "external", "summary": "Reference - cisco", "url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html" }, { "category": "external", "summary": "Reference - cisco", "url": "https://www.cisco.com/go/psirt" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ISE-ABP-VNSW7Tn5" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-RADIUS-dos-wR3hYPMw" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-auth-bypass-1-MxcTNgwx" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-inf-disc-LFWvcCu" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-mult-vul-ymSsTLCc" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-hrP9jQSQ" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-traversal-WDTgYCdn" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-vuln-kWLeNnRD" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multiauth-bypass-sgD2HbL4" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multisql-inject-JnHK54Rq" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-se7bYU57" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-sql-inj-3QTKR947" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xss-Uz9VWRQ" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://software.cisco.com/download/home/283801620/type/283802505/release/HP-3.5-CSCwu05826?i=%21pp" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3425.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3425" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-javarce-y2NypXwk" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-mulivulns-4PsnFwvx" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-sftunn-codex-c3O4Jft2" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc2-multivulns-HXgcqRG" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmcftd-sftun-multivulns-WGVHOrN3" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-asaftdfmc-uvpPROhN" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sec.cloudapps.cisco.com/security/center/publicationListing.x?resourceIDs=212162&apply=1&totalbox=1&cp0=212162#~FilterByProduct" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3417.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3417" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.cisco.com/c/en/us/support/security/defense-center/products-release-notes-list.html" } ], "remediations": [ { "category": "vendor_fix", "details": "Cisco has released software updates that address this vulnerability.", "product_ids": [ "CSAFPID-9331425", "CSAFPID-9331460", "CSAFPID-9331464", "CSAFPID-9331467", "CSAFPID-9331471" ], "url": "https://software.cisco.com/" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "baseScore": 9.1, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-2982742", "CSAFPID-3055479", "CSAFPID-6046943", "CSAFPID-6046948", "CSAFPID-6620158", "CSAFPID-6620843", "CSAFPID-8476700", "CSAFPID-8844590", "CSAFPID-8844591", "CSAFPID-9331425", "CSAFPID-9331460", "CSAFPID-9331464", "CSAFPID-9331467", "CSAFPID-9331471", "CSAFPID-9336400", "CSAFPID-9336401", "CSAFPID-9336402", "CSAFPID-9336403", "CSAFPID-9336404", "CSAFPID-9336405", "CSAFPID-9336406" ] } ], "title": "CVE-2026-20306" } ] }