Feb 04, 2026
APT28’s Campaign Leveraging CVE‑2026‑21509 and Cloud C2 Infrastructure
APT28 (aka Fancy Bear or UAC-0001) has launched a sophisticated espionage campaign targeting European military government, and transportation entities, The attackers weaponized a newly disclosed Microsoft Office 1-day (CVE-2026-21509) within 24 hours of its public revelation, using spear-phishing documents, a multi-stage infection chain and novel payloads.
