CVE-2011-4354: crypto/bn/bn_nist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in...

Security readout for executives and security teams

This is an old OpenSSL flaw where certain 32-bit builds could leak a TLS server's private key after many connection attempts. If a vulnerable server negotiated affected elliptic-curve cipher suites, an attacker could potentially break the confidentiality and identity guarantees of TLS for that service. Exposure is most plausible in legacy 32-bit systems running OpenSSL before 0.9.8h, including products such as stunnel when linked to vulnerable OpenSSL builds and configured to use affected ECDH or ECDHE cipher suites. Prioritize remediation only where legacy 32-bit OpenSSL remains in use. For modern supported systems, urgency is likely low, but confirmed exposure should be treated seriously because the impact is TLS private-key compromise. Mitigation focus: Identify and retire OpenSSL builds before 0.9.8h on 32-bit platforms.; Apply vendor security updates, such as distribution OpenSSL advisories where applicable.; Replace obsolete TLS stacks with supported OpenSSL or platform TLS packages..

Prepared

Jun 27, 2026, 17:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.