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Mongoose preauth RCE and mTLS bypass

April 2, 2026Simone Margaritelli

Simone Margaritelli highlights critical Mongoose network library issues, including preauth RCE and an mTLS bypass, framing it as affecting millions of devices.

Mongoose: Preauth RCE and mTLS Bypass on Millions of Devices
CVE-2026-5244 - mg_tls_recv_cert pubkey heap-based overflow (exploitable)
CVE-2026-5245 - mDNS Record stack-based overflow (exploitable)
CVE-2026-5246 - authorization bypass via P-384 Public Key (trivially exploitable)
Simone Margaritelli
cverceiot

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