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ObsoletedPROPOSED STANDARDIETF stream

RFC 7507: TLS Fallback Signaling Cipher Suite Value (SCSV) for Preventing Protocol Downgrade Attacks

This RFC has been replaced. Do not implement against it for new work — it was formally obsoleted by RFC 8996.

Current document in this lineage: RFC 8996 — Deprecating TLS 1.0 and TLS 1.1

In plain English — editorial summary, not part of the RFC

This document defines a Signaling Cipher Suite Value (SCSV) that prevents protocol downgrade attacks on the Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS) protocols. It updates RFCs 2246, 4346, 4347, 5246, and 6347. Server update considerations are included.

Document record

Document ID
RFC7507
Published
April 2015
Authors
B. Moeller; A. Langley
Status
PROPOSED STANDARD
Stream
IETF
Area
sec
Pages
8
Also known as
—
Obsoleted by:
RFC 8996
Updates:
RFC 2246, RFC 4346, RFC 4347, RFC 5246, RFC 6347

Standards lineage

This document is one revision in a chain of 3 RFCs, each formally replacing the one before it.

  1. RFC 5469 (2009)
  2. RFC 7507 (2015)
  3. RFC 8996 (2021) ✓

Read the full history of Deprecating TLS 1.0 and TLS 1.1 →

Referenced by

One later RFC formally updates or obsoletes part of this document.

Related documents

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.

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canonical URL: /rfc/7507-tls-fallback-signaling-cipher-suite-value-scsv-for-preventing-protocol-downgrade