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In April 2026, 37 high-impact vulnerabilities were actively exploited, heavily impacting enterprise systems and edge infrastructure. Notable exploitation includes the delivery of the Nexcorium botnet via CVE-2024-3721 in TBK DVR devices and complete service takeovers of Nginx UI instances via CVE-2026-33032, a missing authentication flaw.
The Q1 2026 vulnerability landscape shows a continued rise in overall CVEs and KEVs, with a significant focus on software supply chain compromises and networking gear. A notable emerging threat is the abuse of the n8n AI workflow automation platform to bypass traditional security filters, alongside the discovery of the PowMix botnet targeting Czech workers and ongoing exploitation of legacy vulnerabilities.
The Canadian Centre for Cyber Security released a daily digest of five security advisories. The most critical update addresses CVE-2026-34621 in Adobe Acrobat, which is currently being exploited in the wild, alongside various updates for Linux kernels, ICS systems, and IBM enterprise products.
CISA has added seven actively exploited vulnerabilities affecting Microsoft, Adobe, and Fortinet products to its Known Exploited Vulnerabilities (KEV) Catalog, urging immediate remediation across all organizations to reduce exposure to cyberattacks.
