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Linux Backdoor Abuses STUN Protocol, Exploits Dozens of Flaws

ClingSTUN operates as a back-connect proxy backdoor, sets up persistence, and contains exploits for self-propagation. Read more →
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FortiGuard Labs identified a back door for Linux that leverages known vulnerabilities on IoT devices and uses public STUN servers to keep them accessible as proxy nodes. The campaign incorporated new bugs over three periods and opened a discussion among specialists on whether to prioritize network segmentation or firmware remediation.

securityweek.comsecurityweek.com
+2 Reposted by 2 other sources

Linux Backdoor Abuses STUN Protocol, Exploits Dozens of Flaws

The ClingSTUN Linux backdoor targets dozens of vulnerabilities, sets up at-boot persistence, and contains exploits for self-propagation.

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securityweek.com broke the news on Monday, October 5, 2026.
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