The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The Erlang/OTP ssl TLS 1.2 (and earlier) and DTLS client does not verify that the cipher suite selected by     the server in ServerHello was among the suites offered by the client in ClientHello. The client-side     tls_handshake:hello/5 handler validates the negotiated protocol version and the downgrade sentinel but     hands the server-chosen suite directly to ssl_handshake:handle_server_hello_extensions/9, which installs     it without a membership check. The TLS 1.3 client path performs this check (per RFC 8446), so it is not     affected. An on-path attacker between the client and the intended server can respond with a ServerHello     selecting an anonymous key exchange suite such as TLS_DH_anon_* or TLS_ECDH_anon_* that the client never     offered. Anonymous suites do not require the server to present a certificate, so the entire verify_peer     and cacerts configuration is bypassed: the attacker completes the handshake with its own ephemeral     parameters, no certificate is validated, no hostname is checked, and ssl:connect returns {ok, Socket}. All     subsequent application traffic is readable and modifiable by the attacker. This issue affects OTP from OTP     R13B03 before OTP 27.3.4.15, from OTP 28.0 before OTP 28.5.0.4, and from OTP 29.0 before OTP 29.0.4,     corresponding to ssl from 3.10.7 before 11.2.12.11, from 11.3 before 11.6.0.4, and from 11.7 before     11.7.4. Whether OTP before OTP R13B03, corresponding to ssl before 3.10.7, is affected is unknown.
    (CVE-2026-55953)

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Linux Distros Unpatched Vulnerability : CVE-2026-55953

critical Nessus Plugin ID 330402

Version 1.3