wolfSSL Inc.

wolfSSL Inc. maintains cryptographic and TLS libraries widely embedded in embedded systems, IoT devices, and resource-constrained applications, giving its products outsized impact despite a narrow portfolio. Despite the focused product line—centered on wolfSSL itself, wolfMQTT, and yaSSL—the vendor ranks among the most prominent in the vulnerability landscape because cryptographic libraries occupy a critical position in the software supply chain and reach countless downstream deployments. Vulnerabilities affecting the vendor skew strongly toward critical-severity outcomes and recur through weakness classes including out-of-bounds writes and reads, heap-based buffer overflows, and improper certificate validation that reflect the low-level parsing and cryptographic-protocol demands of TLS implementations. Defenders should prioritize inventory of products embedding these libraries, as remediation often depends on downstream vendors rebuilding and releasing patches; live severity, exploitation, and exposure counts are shown alongside this summary.