{"uuid": "927d147d-af17-4c93-a9e6-86641fe38e2c", "vulnerability": {"vulnId": "CVE-2026-88779", "altId": []}, "gcve": {"origin_uuid": "405284c2-e461-4670-8979-7fd2c9755a60", "gna": 1, "object_uuid": "927d147d-af17-4c93-a9e6-86641fe38e2c"}, "status": {"exploited": true, "status_reason": "confirmed", "status_updated_at": "2026-10-04T00:00:00+00:00"}, "timestamps": {"asserted_at": "2026-10-04T00:00:00+00:00", "recorded_at": "2026-10-04T20:00:01+00:00", "first_seen_at": "2026-10-04T00:00:00+00:00"}, "scope": {"notes": "Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability | Affected: Citrix / NetScaler | Description: 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. | Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (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. | Due date: 2026-10-07 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174 ; https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-88779"}, "evidence": [{"type": "vendor_report", "source": "cisa-kev", "signal": "successful_exploitation", "confidence": 0.8, "details": {"cwes": ["CWE-119"], "feed": "CISA Known Exploited Vulnerabilities Catalog", "product": "NetScaler", "due_date": "2026-10-07", "date_added": "2026-10-04", "vendorProject": "Citrix", "vulnerabilityName": "Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability", "knownRansomwareCampaignUse": "Unknown"}}], "references": [{"id": "CVE-2026-88779", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-88779"}]}