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

  - Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to     versions 0.4.24, 0.5.14, and 0.6.4, several Net::IMAP commands accept a raw string argument that is sent     to the server without validation or escaping. If this string is derived from user-controlled input, it may     contain contain CRLF sequences, which an attacker can use to inject arbitrary IMAP commands. This issue     has been patched in versions 0.4.24, 0.5.14, and 0.6.4. (CVE-2026-42257)

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

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-42257

medium Nessus Plugin ID 314319

Version 1.6

Version 1.3

Version 1.2

Version 1.1

Version 1.6 May 26, 2026, 6:39 AM CVSS metrics ("CVSSv2 score" set to 10.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C") Plugin Feed: 202605260639
Version 1.3 May 20, 2026, 10:33 PM CVSS metrics ("CVSSv2 score" set to 9.7) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:P/A:C") Detection (updated detection logic) Plugin metadata Plugin Feed: 202605202233
Version 1.2 May 19, 2026, 3:29 PM CVSS metrics ("CVSSv2 score" set to 10.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C") Plugin Feed: 202605191529
Version 1.1 May 12, 2026, 10:34 PM New Plugin Feed: 202605122234