RECENT BLOG NEWS

So, what’s new at wolfSSL? Take a look below to check out the most recent news, or sign up to receive weekly email notifications containing the latest news from wolfSSL. wolfSSL also has a support-specific blog page dedicated to answering some of the more commonly received support questions.

wolfSSL 5.8.4 Now Available

wolfSSL 5.8.4 introduces several updates, including the addition of a GPLv3 exceptions list. This allows specific GPLv3-licensed codebases linking against wolfSSL to continue using wolfSSL under GPLv2. Current GPLv3 Exceptions: MariaDB Server MariaDB Client Libraries OpenVPN-NL Fetchmail OpenVPN Security Fixes This release includes multiple fixes across TLS 1.2, TLS 1.3, X25519, XChaCha20-Poly1305, and PSK processing. […]

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FATFS Enhancements in wolfSSH 1.4.21

FATFS Ready in wolfSSH 1.4.21 wolfSSH 1.4.21 is now available, and this release focuses on making FATFS-backed SFTP deployments easier to ship, test, and maintain. Since tagging v1.4.20-stable, we invested in reliability improvements, developer tooling, and CI coverage that harden FATFS integration for embedded SSH gateways, industrial control systems, and secure file transfer clients. This […]

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Announcing wolfMQTT v1.21.0: NetX and ThreadX RTOS Support

We are excited to announce the release of wolfMQTT v1.21.0, which introduces support for NetX and ThreadX RTOS platforms as its headline feature. This release continues our commitment to providing a lightweight, secure, and feature-rich MQTT client implementation for embedded systems and IoT applications. What’s New in v1.21.0 The wolfMQTT v1.21.0 release includes several significant […]

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Keyboard-Interactive (RFC 4256) lands in wolfSSH — flexible SSH authentication for embedded, IoT, and server use

At wolfSSL we build compact, high-performance security libraries for systems that range from tiny MCUs to cloud servers. Our SSHv2 library, wolfSSH, now supports Keyboard-Interactive authentication (RFC 4256), enabling rich challenge/response and multi-step logins without changing your client code. Keyboard-Interactive first shipped in wolfSSH 1.4.20 and has since seen API refinements to simplify how applications […]

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tiny-curl 101: Secure Communication with a Small Footprint

Date: December 4 | 9 AM PT Duration: 60 minutes Register Today: tiny-curl 101: Secure Communication with a Small Footprint Join curl founder Daniel Stenberg for a practical webinar on tiny-curl, the lightweight version of curl designed for embedded devices and resource-constrained environments. Learn how tiny-curl enables secure HTTPS communication even on extremely limited hardware. […]

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curl Award Month: National and European Recognition and Legacy – curl’s Impact in the Modern Era

2025 marked a year of extraordinary recognition for Daniel Stenberg and curl, celebrating both technical excellence and societal impact. Daniel was honored with the European Open Source Achievement Award, highlighting his enduring contributions to open-source software and acknowledging the global influence of curl in enabling reliable and secure data transfers. Later that year, he was […]

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The wolfCrypt Linux Kernel Module: FIPS Full Crypto Stack Replacement

For nearly 20 years, the wolfSSL library has set the benchmark for performant, full-featured cryptography and TLS transport on embedded targets. Since 2015, wolfSSL has been the premier FIPS-certified cryptography software module for the embedded space. Now, we bring that depth of experience to the Linux kernel. libwolfssl.ko implements the same comprehensive set of algorithms […]

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Building Secure Embedded Systems: wolfSSL’s Comprehensive Yocto Support for FIPS-Certified Applications

Building FIPS-certified embedded systems just got easier. wolfSSL provides comprehensive Yocto Project support through the meta-wolfssl layer, enabling developers to integrate FIPS-validated cryptography into embedded Linux builds with reproducible, cross-platform consistency. Whether you’re developing medical devices, industrial controllers, defense systems, or IoT products, this combination delivers the security compliance regulators demand with the flexibility embedded […]

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Introducing wolfIP — a tiny, safe TCP/IP stack for embedded and safety‑critical systems

If you’ve ever tried to drop a full‑blown networking stack into a deeply embedded target, you know the drill: memory budgets get tight, timing gets squirrely, and dynamic allocation can turn certification efforts into a slog. wolfIP is our answer: a compact TCP/IP stack built with embedded systems in mind, that favors determinism over surprise. […]

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