{"id":"CVE-2026-3055","state":"PUBLISHED","title":"Insufficient input validation leading to memory overread","description":"Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread","publishedAt":"2026-03-23T20:21:27.107Z","updatedAt":"2026-03-31T03:55:32.569Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","source":"NetScaler"},"assigner":"NetScaler","products":["NetScaler ADC","NetScaler Gateway"],"affected":[{"vendor":"NetScaler","product":"ADC","defaultStatus":"unaffected","versions":[{"version":"14.1","status":"affected","lessThan":"66.59","versionType":"patch"},{"version":"13.1","status":"affected","lessThan":"62.23","versionType":"patch"},{"version":"13.1 FIPS and NDcPP","status":"affected","lessThan":"37.262","versionType":"patch"}]},{"vendor":"NetScaler","product":"Gateway","defaultStatus":"unaffected","versions":[{"version":"14.1","status":"affected","lessThan":"66.59","versionType":"patch"},{"version":"13.1","status":"affected","lessThan":"62.23","versionType":"patch"}]}],"references":["https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300","https://labs.watchtowr.com/please-we-beg-just-one-weekend-free-of-appliances-citrix-netscaler-cve-2026-3055-memory-overread-part-2/","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3055"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/3xxx/CVE-2026-3055.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3055","state":"PUBLISHED","datePublished":"2026-03-23T20:21:27.107Z","dateUpdated":"2026-03-31T03:55:32.569Z","assignerShortName":"NetScaler","assignerOrgId":"50a63c94-1ea7-4568-8c11-eb79e7c5a2b5","dateReserved":"2026-02-23T18:00:08.900Z"},"containers":{"cna":{"title":"Insufficient input validation leading to memory overread","descriptions":[{"lang":"en","value":"Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread"}],"affected":[{"vendor":"NetScaler","product":"ADC","defaultStatus":"unaffected","versions":[{"version":"14.1","status":"affected","lessThan":"66.59","versionType":"patch"},{"version":"13.1","status":"affected","lessThan":"62.23","versionType":"patch"},{"version":"13.1 FIPS and NDcPP","status":"affected","lessThan":"37.262","versionType":"patch"}]},{"vendor":"NetScaler","product":"Gateway","defaultStatus":"unaffected","versions":[{"version":"14.1","status":"affected","lessThan":"66.59","versionType":"patch"},{"version":"13.1","status":"affected","lessThan":"62.23","versionType":"patch"}]}],"references":[{"url":"https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300"}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds Read","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"NetScaler","orgId":"50a63c94-1ea7-4568-8c11-eb79e7c5a2b5","dateUpdated":"2026-03-23T20:21:27.107Z"},"datePublic":"2026-03-23T19:20:00.000Z","source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://labs.watchtowr.com/please-we-beg-just-one-weekend-free-of-appliances-citrix-netscaler-cve-2026-3055-memory-overread-part-2/","tags":["third-party-advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3055","tags":["government-resource"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-23T00:00:00+00:00","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-3055"}}},{"other":{"type":"kev","content":{"dateAdded":"2026-03-30","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3055"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-31T03:55:32.569Z"},"timeline":[{"time":"2026-03-30T00:00:00.000Z","lang":"en","value":"CVE-2026-3055 added to CISA KEV"}]}]}}}