{"schema":"threatline.record/2","record":{"id":"CVE-2026-88779","aliases":[],"summary":"Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability","details":"Citrix NetScaler ADC (formerly Citrix ADC) and Citrix NetScaler Gateway (formerly Citrix Gateway) contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for a denial of service.","categories":["Network & edge"],"product":"NetScaler","vendor":"Citrix","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88779","source_modified_at":"2026-10-05T03:55:38.096Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"ADC","vendor":"NetScaler","versions":[{"status":"affected","version":"0","lessThan":"14.1-73.41","versionType":"Patch"},{"status":"affected","version":"0","lessThan":"13.1-64.28","versionType":"Patch"},{"status":"affected","version":"0","lessThan":"14.1-73.41 FIPS","versionType":"Patch"},{"status":"affected","version":"0","lessThan":"13.1-37.282","versionType":"Patch"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88779","source_modified_at":"2026-10-05T03:55:38.096Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Gateway","vendor":"NetScaler","versions":[{"status":"affected","version":"0","lessThan":"14.1-73.41","versionType":"Patch"},{"status":"affected","version":"0","lessThan":"13.1-64.28","versionType":"Patch"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88779","source_modified_at":"2026-10-05T03:55:38.096Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"ADC","ecosystem":null},"version":"14.1-73.41","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88779","source_modified_at":"2026-10-05T03:55:38.096Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"ADC","ecosystem":null},"version":"13.1-64.28","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88779","source_modified_at":"2026-10-05T03:55:38.096Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"ADC","ecosystem":null},"version":"14.1-73.41 FIPS","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88779","source_modified_at":"2026-10-05T03:55:38.096Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"ADC","ecosystem":null},"version":"13.1-37.282","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88779","source_modified_at":"2026-10-05T03:55:38.096Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Gateway","ecosystem":null},"version":"14.1-73.41","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88779","source_modified_at":"2026-10-05T03:55:38.096Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Gateway","ecosystem":null},"version":"13.1-64.28","basis":"first unaffected version stated in the CVE record"}],"cvss":8.7,"severity":"High","kev":{"listed":true,"date_added":"2026-10-04","due_date":"2026-10-07","required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.00592,"percentile":0.47623,"score_date":"2026-10-23"},"published_at":"2026-10-04T02:35:35.525Z","modified_at":"2026-10-05T03:55:38.096Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-88779","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-05T03:55:38.096Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-88779","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174"},{"source":"CVE List","url":"https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88779","source":"CISA KEV"},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88779","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-04T00:00:00+00:00"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-05T03:55:38.096Z","content_hash":"35455a672cc4b3ad49ec7daf4e30e41ae7ca4b3fc3ca7e5db3f205b337954323"}}