IETF RFC 9851
[ACTIVE]
TLS 1.2 is in Feature Freeze
Metadata
- Publisher
- IETF
- Doc Type
- Standard
- Pages
- 5
- Abstract
- Use of TLS 1.3, which fixes some known deficiencies in TLS 1.2, is growing. This document specifies that no changes will be approved for TLS 1.2 outside of urgent security fixes (as determined by TLS Working Group consensus), new TLS Exporter Labels, and new Application-Layer Protocol Negotiation (ALPN) Protocol IDs. This applies to TLS only; it does not apply to DTLS (in any DTLS version).
- Publication Date
- 2026-07-01
- Status Note
- Proposed Standard
- DOI
10.17487/RFC9851- Link
- https://doi.org/10.17487/RFC9851
- Author(s)
- Rich SalzNimrod Aviram
- Keyword(s)
- TLS
Latest version of IETF RFC 9851
Document Versions — IETF RFC 9851
-
▶ IETF RFC 9851 (2026-07-01)THIS DOC [ACTIVE] [LATEST VERSION]
Normative Reference(s)
- IETF RFC 5246 [Superseded*]
- IETF RFC 9846 [Active*]
- IETF RFC 9847 [Active*]
Bibliographic Reference(s)
- ETSI.TR-103-619.2020 — ETSI EXTERNAL
- NIST.FIPS.203 — ML-KEM EXTERNAL
- NIST.FIPS.204 — ML-DSA EXTERNAL
- NIST.FIPS.205 — SLH-DSA EXTERNAL
- McGrew, D., "Post Quantum Secure Cryptography Discussion", IETF 95 Proceedings, April 2016, <https://www.ietf.org/proceedings/95/slides/slides-95-cfrg-4.pdf>. EXTERNAL
- IETF, "Post-Quantum Use in Protocols", <https://datatracker.ietf.org/wg/pquip/about/>. EXTERNAL
- NIST, "Post-Quantum Cryptography (PQC)", January 2017, <https://csrc.nist.gov/projects/post-quantum-cryptography>. EXTERNAL
- IETF, "Transport Layer Security", <https://datatracker.ietf.org/wg/tls/about/>. EXTERNAL
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IETF RFC 9851, TLS 1.2 is in Feature Freeze. Available at https://doi.org/10.17487/RFC9851
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IETF RFC 9851, TLS 1.2 is in Feature Freeze. Available at https://doi.org/10.17487/RFC9851
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IETF RFC 9851, TLS 1.2 is in Feature Freeze. Available at https://doi.org/10.17487/RFC9851
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<span class="citation"><cite>IETF RFC 9851</cite>, TLS 1.2 is in Feature Freeze. Available at <a href="https://doi.org/10.17487/RFC9851" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9851</a></span>
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IETF RFC 9851, TLS 1.2 is in Feature Freeze
doi: 10.17487/RFC9851
url: https://doi.org/10.17487/RFC9851
doi: 10.17487/RFC9851
url: https://doi.org/10.17487/RFC9851
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<li> <cite id="bib-rfc9851">IETF RFC 9851</cite>, TLS 1.2 is in Feature Freeze <span class="doi">10.17487/RFC9851</span> </li>
Referenced By
- IETF RFC 9852 [Active*]