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EMudhra

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critical advisory

eMudhra: Eight compromised intermediate CA keys threaten TLS trust

Eight eMudhra intermediate CA private keys were compromised. A researcher found one key had the integer value 4; Mozilla blocked the affected certificates and updated its trust store.

emSign intermediate CA certificates certificate-authority tls-interception
critical advisory

Certifi: Bundled eMudhra root CAs with compromised intermediate keys

Certifi versions before 2026.10.18 included emSign roots whose intermediate keys were compromised. An attacker able to position on path could use a fraudulent certificate to intercept TLS traffic.

certifi certificate-authority tls-interception python