{"uuid": "116d8d49-c0e5-4f69-bcea-4ac74c085a0a", "vulnerability": {"vulnId": "CVE-2025-6543", "altId": []}, "gcve": {"origin_uuid": "405284c2-e461-4670-8979-7fd2c9755a60", "object_uuid": "116d8d49-c0e5-4f69-bcea-4ac74c085a0a"}, "status": {"exploited": true, "status_reason": "confirmed", "status_updated_at": "2025-06-30T00:00:00+00:00"}, "characteristics": {}, "timestamps": {"asserted_at": "2025-06-30T00:00:00Z", "recorded_at": "2026-02-02T13:24:01Z", "first_seen_at": "2025-06-30T00:00:00Z"}, "scope": {"notes": "KEV entry: Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability | Affected: Citrix / NetScaler ADC and Gateway | Description: Citrix NetScaler ADC and Gateway contain a buffer overflow vulnerability leading to unintended control flow and Denial of Service. NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2025-07-21 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788 ; https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/ ;   https://nvd.nist.gov/vuln/detail/CVE-2025-6543"}, "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 ADC and Gateway", "due_date": "2025-07-21", "date_added": "2025-06-30", "vendorProject": "Citrix", "vulnerabilityName": "Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability", "knownRansomwareCampaignUse": "Unknown"}}], "references": [{"id": "CVE-2025-6543", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-6543"}]}