Unit 42 Uncovers PEERSTITCH, a Stealthy FortiGate Implant

vulnerability

Unit 42 Uncovers PEERSTITCH, a Stealthy FortiGate Implant

Unit 42 has uncovered PEERSTITCH, a sophisticated, memory-resident malware used by attackers to gain long-term access to a telecommunications managed service provider's network. The attackers exploited CVE-2024-47575 (Fo…

Palo Alto Unit 42 · 1d ago CriticalCVSS 9.8KEVEPSS 95%

CVE-2024-47575 CVE-2025-61624 CVE-2024-26009 fortigate malware threat-intel

vulnerability

PEERSTITCH Malware Deployed via FortiOS Flaw Bypasses Checks on Tagged VPN Sessions

A sophisticated threat actor, tracked as CL-STA-0954 (UNC5820), exploited a path traversal vulnerability (CVE-2025-61624) in FortiOS to deploy a memory-resident malware called PEERSTITCH. The attackers exfiltrated a sign…

The Hacker News · 8h ago CriticalCVSS 9.8KEVEPSS 95%

CVE-2025-61624 CVE-2024-47575 CVE-2024-26009 malware supply-chain vpn

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Unit 42 Uncovers PEERSTITCH, a Stealthy FortiGate Implant

Unit 42 Uncovers PEERSTITCH, a Stealthy FortiGate Implant

PEERSTITCH Malware Deployed via FortiOS Flaw Bypasses Checks on Tagged VPN Sessions