Haifei Li

Reported Context (7)

Check Point researcher who said Microsoft patched a bug he reported without notifying him and criticized coordinated disclosure as one-sided. Microsoft Condemns Uncoordinated Windows Zero-Day Releases
Credited by Microsoft with reporting CVE-2026-40361; he demonstrated its potential impact and developed a PoC, but said it was not a working exploit. Microsoft Patches CVE-2026-40361, a Critical Zero-Click Outlook Flaw
Discovered the vulnerability after investigating the submitted PDF sample and developed the Adobe Reader detection-in-depth capability used during the investigation. Adobe Patches Acrobat Zero-Day Exploited Through Malicious PDFs
The EXPMON founder and security researcher disclosed details of the zero-day exploitation. Adobe Patches Actively Exploited Acrobat Flaw CVE-2026-34621
Reported the vulnerability and identified the zero-day while analyzing a PDF exploit uploaded to Expmon; he also made technical details available. Adobe Patches Actively Exploited Acrobat and Reader Zero-Day CVE-2026-34621

CVE (3)

People (3)

MITRE ATT&CK (5)

Vendors (2)

Products (10)

Tools (2)

Industries (1)

Countries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.