Cisco Asa Certificate Validation Failed. Ee Key Is Too Small ●

One Monday morning, users started reporting that their AnyConnect VPN connections were failing. The ASA logs showed: certificate validation failed. ee key is too small The IT team was puzzled—they had just installed a brand-new 2048-bit certificate. Why would the ASA reject it as “too small”?

Here’s a concise incident-style story based on that error message. The Case of the Too-Small Key cisco asa certificate validation failed. ee key is too small

The ASA, when building the chain, used the older intermediate CA cert because it had a matching issuer name. It then checked the —but in the ASA’s validation logic, “EE key” in this context meant the public key of the end entity certificate presented by the client ? No, actually the error is misleading: it refers to the server certificate’s own key being too small ? Wait, not exactly. One Monday morning, users started reporting that their