{"uuid": "a12eee2d-8ade-4d7b-8980-d5ff8a2e150c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-88771", "type": "seen", "source": "https://bsky.app/profile/greynoise.io/post/3mwlt5ttph22h", "content": "On September 24, GreyNoise observed zero-day exploitation attempts against Citrix NetScaler Gateway, now tracked as CVE-2026-88771. Existing GreyNoise detections flagged the source IP as malicious within seconds, three days before the vulnerability was publicly disclosed.", "creation_timestamp": "2026-09-28T17:20:21.840009Z"}