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JLSEC-2026-1257 Cesanta Mongoose before 7.22 contains an out-of-bounds read in the built-in TLS server function...

🗓️ 12 Aug 2026 07:17:34Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 6 Views

Cesanta Mongoose before 7.22 has OOB read in TLS server via unchecked session_id_len from ClientHello, crashing HTTPS/MQTTS/WSS services.

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12 Aug 2026 07:43Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.17.5
CVSS 48.7
EPSS0.00347
6