{ "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-2026-19489", "tracking": { "current_release_date": "2026-08-25T12:16:38.950261Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-19489", "initial_release_date": "2026-08-19T12:40:24.211359Z", "revision_history": [ { "date": "2026-08-19T12:40:24.211359Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (8).| Product Remediations created (4).| CWES updated (1)." }, { "date": "2026-08-19T12:40:37.090763Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-08-19T13:31:42.257380Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1)." }, { "date": "2026-08-19T13:31:53.151874Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-08-19T13:39:42.841219Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (4).| References created (1)." }, { "date": "2026-08-19T13:39:45.446851Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-08-19T18:40:11.738923Z", "number": "7", "summary": "Product Remediations created (3).| Product Remediations removed (3)." }, { "date": "2026-08-20T06:57:25.244258Z", "number": "8", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-08-20T06:57:26.390417Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-08-20T09:30:51.860748Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-20T09:30:59.502498Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-08-20T11:33:20.602533Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Products created (4).| References created (4)." }, { "date": "2026-08-20T11:33:24.077877Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-08-20T13:05:24.253897Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-20T13:05:30.725385Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-08-20T14:40:35.773613Z", "number": "16", "summary": "CWES updated (1).| Unknown change." }, { "date": "2026-08-20T14:40:37.322945Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-08-20T15:29:13.403605Z", "number": "18", "summary": "CWES updated (1)." }, { "date": "2026-08-20T15:29:17.007950Z", "number": "19", "summary": "NCSC Score updated." }, { "date": "2026-08-20T15:31:33.071147Z", "number": "20", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-08-23T15:11:46.060004Z", "number": "21", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-08-23T15:12:22.286220Z", "number": "22", "summary": "NCSC Score updated." }, { "date": "2026-08-25T12:15:49.700707Z", "number": "23", "summary": "NCSC Score updated." } ], "status": "interim", "version": "23" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:patch/13.1|<=63.21", "product": { "name": "vers:patch/13.1|<=63.21", "product_id": "CSAFPID-9013583" } }, { "category": "product_version_range", "name": "vers:patch/14.1|<=73.32", "product": { "name": "vers:patch/14.1|<=73.32", "product_id": "CSAFPID-9013582" } } ], "category": "product_name", "name": "ADC" }, { "branches": [ { "category": "product_version_range", "name": "vers:patch/13.1|<=63.21", "product": { "name": "vers:patch/13.1|<=63.21", "product_id": "CSAFPID-9013585" } }, { "category": "product_version_range", "name": "vers:patch/14.1|<=73.32", "product": { "name": "vers:patch/14.1|<=73.32", "product_id": "CSAFPID-9013584" } } ], "category": "product_name", "name": "Gateway" } ], "category": "vendor", "name": "NetScaler" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/adc <13.1-63.21", "product": { "name": "vers:unknown/adc <13.1-63.21", "product_id": "CSAFPID-9026756" } }, { "category": "product_version_range", "name": "vers:unknown/adc <14.1-73.32", "product": { "name": "vers:unknown/adc <14.1-73.32", "product_id": "CSAFPID-9026755" } }, { "category": "product_version_range", "name": "vers:unknown/gateway <13.1-63.21", "product": { "name": "vers:unknown/gateway <13.1-63.21", "product_id": "CSAFPID-9026754" } }, { "category": "product_version_range", "name": "vers:unknown/gateway <14.1-73.32", "product": { "name": "vers:unknown/gateway <14.1-73.32", "product_id": "CSAFPID-9026753" } } ], "category": "product_name", "name": "NetScaler" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<14.1-73.32fips", "product": { "name": "vers:unknown/<14.1-73.32fips", "product_id": "CSAFPID-9012766" } }, { "category": "product_version_range", "name": "vers:unknown/>=14.1-73.32fips", "product": { "name": "vers:unknown/>=14.1-73.32fips", "product_id": "CSAFPID-9012770" } } ], "category": "product_name", "name": "NetScaler ADC FIPS" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<13.1-37.277", "product": { "name": "vers:unknown/<13.1-37.277", "product_id": "CSAFPID-9012767" } }, { "category": "product_version_range", "name": "vers:unknown/>=13.1-37.277", "product": { "name": "vers:unknown/>=13.1-37.277", "product_id": "CSAFPID-9012771" } } ], "category": "product_name", "name": "NetScaler ADC FIPS and NDcPP" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<13.1-63.21", "product": { "name": "vers:unknown/<13.1-63.21", "product_id": "CSAFPID-9012765" } }, { "category": "product_version_range", "name": "vers:unknown/<14.1-73.32", "product": { "name": "vers:unknown/<14.1-73.32", "product_id": "CSAFPID-9012764" } }, { "category": "product_version_range", "name": "vers:unknown/>=13.1-63.21", "product": { "name": "vers:unknown/>=13.1-63.21", "product_id": "CSAFPID-9012769" } }, { "category": "product_version_range", "name": "vers:unknown/>=14.1-73.32", "product": { "name": "vers:unknown/>=14.1-73.32", "product_id": "CSAFPID-9012768" } } ], "category": "product_name", "name": "NetScaler ADC and NetScaler Gateway" } ], "category": "vendor", "name": "Citrix" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-19489", "cwe": { "id": "CWE-120", "name": "Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')" }, "notes": [ { "category": "description", "text": "Memory overflow vulnerability leading to unpredictable behavior or Denial of Service", "title": "citrix - https://api-csm.citrix.com/es/nau/articles/get_article_details/enduser?articleNumber=CTX696939" }, { "category": "description", "text": "Vulnerability in NetScaler ADC and NetScaler Gateway.\n\nThis issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-19489" }, { "category": "description", "text": "Vulnerability in NetScaler ADC and NetScaler Gateway.\n\nThis issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/19xxx/CVE-2026-19489.json" }, { "category": "other", "text": "0.00345", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:L", "title": "CVSSV4" }, { "category": "other", "text": "8.8", "title": "CVSSV4 base score" }, { "category": "other", "text": "6.5", "title": "NCSC Score" }, { "category": "other", "text": "VENDOR FIX as product remediation category, Is related to an uncommon product source, Is related to (a version of) an uncommon product, There is news data available from source Bleepingcomputer, There is product data available from source Certbundde, Is related to an uncommon cwe source, There is news data available from source Securityweek", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "The value of the most recent CVSS (V3) score, The CVSS vector string contains AV:N (Attack Vector: Network)", "title": "NCSC Score top decreasing factors" } ], "product_status": { "fixed": [ "CSAFPID-9012768", "CSAFPID-9012769", "CSAFPID-9012770", "CSAFPID-9012771" ], "known_affected": [ "CSAFPID-9012764", "CSAFPID-9012765", "CSAFPID-9012766", "CSAFPID-9012767", "CSAFPID-9013582", "CSAFPID-9013583", "CSAFPID-9013584", "CSAFPID-9013585", "CSAFPID-9026753", "CSAFPID-9026754", "CSAFPID-9026755", "CSAFPID-9026756" ] }, "references": [ { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=40000" }, { "category": "external", "summary": "Source - citrix", "url": "https://api-csm.citrix.com/es/nau/articles/get_article_details/enduser?articleNumber=CTX696939" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-19489" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/19xxx/CVE-2026-19489.json" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0318" }, { "category": "external", "summary": "Source - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/security/citrix-urges-admins-to-patch-new-netscaler-flaws-as-soon-as-possible/" }, { "category": "external", "summary": "Source - securityweek", "url": "https://www.securityweek.com/exploitation-expected-for-critical-authentication-bypass-patched-in-citrix-netscaler/" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2927.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=30000" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-19489" }, { "category": "external", "summary": "News - securityweek", "url": "https://www.securityweek.com/exploitation-expected-for-critical-authentication-bypass-patched-in-citrix-netscaler/" }, { "category": "external", "summary": "News - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/security/citrix-urges-admins-to-patch-new-netscaler-flaws-as-soon-as-possible/" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd", "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696939" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2927.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2927" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://cert.europa.eu/publications/security-advisories/2026-010/" } ], "remediations": [ { "category": "vendor_fix", "details": "Update to NetScaler ADC and NetScaler Gateway 14.1-73.32 and later releases.", "product_ids": [ "CSAFPID-9012764" ] }, { "category": "vendor_fix", "details": "Update to NetScaler ADC and NetScaler Gateway 13.1-63.21 and later releases.", "product_ids": [ "CSAFPID-9012765" ] }, { "category": "vendor_fix", "details": "Update to NetScaler ADC 14.1-FIPS 14.1-73.32 FIPS and later releases.", "product_ids": [ "CSAFPID-9012766" ] }, { "category": "vendor_fix", "details": "Update to NetScaler ADC 13.1-FIPS and 13.1-NDcPP 13.1-37.277 and later releases.", "product_ids": [ "CSAFPID-9012767" ] } ], "title": "CVE-2026-19489" } ] }