In March 2026, 31 high-impact vulnerabilities were actively exploited, highlighted by the Interlock Ransomware Group leveraging a CVSS 10.0 zero-day in Cisco Secure FMC (CVE-2026-20131). The attackers utilized insecure Java deserialization to gain root access, deploying custom RATs, memory-resident web shells, and ransomware across enterprise networks.
DarkSword
3 posts
March 2026 CVE Landscape: 31 High-Impact Vulnerabilities Identified, Interlock Ransomware Group Exploits Cisco FMC Zero-Day Cyber Centre Daily Advisory Digest — 2026-04-02 (2 advisories) The Canadian Centre for Cyber Security issued two security advisories. Apple released extensive updates across its operating systems to mitigate vulnerabilities, specifically targeting web attacks from the DarkSword iOS exploit kit. WatchGuard patched an Arbitrary File Write via Path Traversal vulnerability affecting the Fireware Web UI in multiple versions of Fireware OS.
The Proliferation of DarkSword: iOS Exploit Chain Adopted by Multiple Threat Actors Google Threat Intelligence Group discovered DarkSword, a sophisticated iOS full-chain exploit leveraging six zero-day vulnerabilities to target iOS 18.4-18.7 devices. Adopted by multiple state-sponsored actors and commercial surveillance vendors, the pure-JavaScript exploit chain bypasses modern iOS mitigations to deploy data-mining payloads like GHOSTBLADE, GHOSTKNIFE, and GHOSTSABER.
