Dear Mbed TLS Users,
We are preparing for a transition in the maintenance of TLS and X.509 libraries (both contained in
the Mbed TLS project).
The existing maintainers will continue to develop and maintain TF-PSA-Crypto, which remains an
actively maintained part of the project.
The existing maintainers will cease their involvement in their development and maintenance
of Mbed TLS from April 2027.
Unless new maintainers have joined the project and ramped up by that time, security incident
response, security fixes, and releases will cease from April 2027.
The future maintenance arrangements for the TLS and X.509 libraries have not yet been determined. We
welcome contributions from organisations and individuals interested in helping sustain Mbed TLS,
whether through engineering resources, funding, or other forms of support. The existing
maintainers are committed to supporting new maintainers as they ramp up and take on responsibility
for the libraries.
If you or your organisation are interested in contributing to the future maintenance of Mbed TLS,
please contact mbed-tls-owner(a)lists.trustedfirmware.org.
We recognise the importance of these libraries to their users and the wider ecosystem, and hope
that, with community involvement, a sustainable path forward can be established.
Kind regards,
The Mbed TLS Team
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
Hi Mbed TLS users,
We have released Mbed TLS 4.1.0, Mbed TLS 3.6.6, and TF-PSA-Crypto 1.1.0.
These releases address several security issues, include bug fixes, and bring other improvements.
Mbed TLS 4.1.0 and TF-PSA-Crypto 1.1.0 are new Long Term Support (LTS) releases and will be supported until March 2029.
Mbed TLS 3.6 remains supported until March 2027.
We recommend all users review the changes, assess any impact, and upgrade as appropriate.
Full details are available in the release notes:
https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-4.1.0https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-3.6.6https://github.com/Mbed-TLS/TF-PSA-Crypto/releases/tag/tf-psa-crypto-1.1.0
Kind regards,
The Mbed TLS Team
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
Dear sir/Madam,
The Foundation is in the process of making significant
investments—ranging from $1 million to $100 million—in
individuals, organizations, and corporate entities that
demonstrate strong potential to create meaningful, long-term
impact.
As part of this initiative, you have been selected for
consideration for a funding allocation between $3 million and $10
million. This funding is specifically intended to support
community-based projects that address the needs of underserved
populations, while also ensuring that you and your family have
the stability and resources necessary to sustain this work.
The minimum amount approved is $3 million, and the Foundation has
established a clear structure for how these funds may be used:
60% of the funds will be dedicated to project-related expenses,
including program development, operations, staffing, and other
costs directly tied to serving the community.
40% of the funds will be allocated for family support,
recognizing that personal stability is essential for long-term
leadership, focus, and success in carrying out these initiatives.
Should a higher funding amount be approved (up to $10 million),
this same purpose-driven framework will apply, with allocations
scaled accordingly.
This investment reflects the Foundation’s commitment not only to
impactful community outcomes, but also to supporting the
individuals leading this work in a sustainable and holistic way.
We hope to hear from you soon.
Best regards,
---
Evans - Principal Consultant - PIF-(FDI-SPV).
Tel/Whats-app:+ (44) 7466 557915.
Hi Mbed TLS users,
We have released Mbed TLS version 3.6.5.
These releases of Mbed TLS address several security issues, provide bug fixes, and bring other minor changes. Full details are available in the release notes https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-3.6.5.
We recommend all users to consider whether they are impacted, and to upgrade appropriately.
I am happy to announce the joint-release of Mbed TLS 4.0.0-beta & TF-PSA-Crypto 1.0.0-beta
PSA-Crypto now lives in its own repository while TLS and X.509 remain in Mbed TLS.
This beta release breaks compatibility with earlier versions of Mbed TLS.
Please do not use it in production.
It’s intended for the community to verify codebase integrations against the split and API changes, and for early adopters to experiment and provide feedback.
For full details, please see the release pages:
Mbed TLS 4.0.0-beta: https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-4.0.0-beta
TF-PSA-Crypto 1.0.0-beta: https://github.com/Mbed-TLS/TF-PSA-Crypto/releases/tag/tf-psa-crypto-1.0.0-…
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
Hi Mbed TLS users,
We have released Mbed TLS versions 3.6.4.
These releases of Mbed TLS address several security issues, provide bug fixes, and bring other minor changes. Full details are available in the release notes (https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-3.6.4).
We recommend all users to consider whether they are impacted, and to upgrade appropriately.
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
Dear Mbed TLS users,
We have released Mbed TLS versions 3.6.3 and 2.28.10. These releases provide bugfixes, security fixes and minor improvements.
This release of Mbed TLS provides the fix for the TLS compatibility issue of handling fragmented handshake messages. This release includes fixes for security issues.
Full details are available in the release notes:
https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-2.28.10https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-3.6.3
We recommend all users to consider whether they are impacted, and to upgrade appropriately.
Many thanks,
Minos Galanakis
Mbed TLS developer
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
Dear Mbed TLS users,
The next release of Mbed TLS (3.6.3 and 2.28.10) is scheduled on Monday
2025-03-24. It will include a security fix for a vulnerability with a
high impact to affected applications.
Due to the nature of the vulnerability, which involves an insecure
default in current versions of Mbed TLS, fixing it may require a small
change in application code. We will provide instructions in the release
notes. Without this change, affected applications will fail at runtime
with Mbed TLS 3.6.3 or 2.28.10. Applications that are currently secure
will generally not require any change.
We apologize for the inconvenience.
Best regards,
--
Gilles Peskine
On behalf of the Mbed TLS security team
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
