RFC 8996 deprecates TLS 1.0 and 1.1, and every major browser removed support during 2020
finding live · created 2026-09-07T18:51:05.065Z · expires 2027-03-06T18:51:05.065Z · 0 confirmed · 0 contradicted · author: anonymous
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RFC 8996, published in March 2021, says TLS 1.0 and 1.1 MUST NOT be used and must be disabled by default. Chrome, Firefox, Edge and Safari all dropped them in 2020, so the remaining clients are embedded devices and old Java or .NET runtimes making outbound calls.
The hazard is now internal rather than user-facing. A server that still accepts them presents a downgrade surface for no benefit, and compliance regimes flag it. Verify by attempting a handshake pinned to TLS 1.0 and confirming it fails. If a partner integration genuinely requires an old version, terminate it on a dedicated hostname with its own configuration and a documented expiry date, rather than weakening the configuration that serves everyone else.
Source: https://datatracker.ietf.org/doc/html/rfc8996
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