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

  - sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIE_ECHO restores     fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM length, HMAC list, or     CHUNKS list can then reach association consumers with lengths or identifiers that were never validated     against the local backing arrays. A forged RANDOM length can cause out-of-bounds reads during key-vector     construction. A forged HMAC identifier also caused a 32-byte write past a zero-length AUTH chunk,     providing a primitive for a local privilege escalation chain. Validate the cookie's RANDOM, HMACS, and     CHUNKS parameters at the cookie trust boundary before copying them into the association. Reject invalid     types, malformed lengths, unsupported HMAC identifiers, HMAC lists without SHA1, and forbidden chunk ids.
    (CVE-2026-74752)

Note that Nessus relies on the presence of the package as reported by the vendor.

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Linux Distros Unpatched Vulnerability : CVE-2026-74752

critical Nessus Plugin ID 340762

Version 1.15