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

  - Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expression matching     via an undersized superlinear cache in S_regmatch. The regex engine's superlinear cache holds one bit per     subject position for each participating WHILEM node, so the bit count is the subject length plus one times     the number of nodes. Nothing checks that product for positive overflow of the signed 32-bit count: a     286331153 byte subject matched against a pattern with 15 participating nodes stores the count as 14,     leaving a two byte cache. The cache is then indexed from the real match position and node number, so reads     go past the end of the allocation, and on failure CACHEsayNO sets a bit past it. A caller that matches an     attacker controlled subject of this size against a pattern of this shape can crash the process or corrupt     heap memory. (CVE-2026-15534)

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

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-15534

medium Nessus Plugin ID 333558

Version 1.7

Version 1.6

Version 1.4

Version 1.3

Version 1.1

Version 1.7 Oct 5, 2026, 10:36 PM Plugin metadata Plugin Feed: 202610052236
Version 1.6 Sep 21, 2026, 8:44 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202609212044
Version 1.4 Sep 2, 2026, 12:19 AM Detection (updated detection logic) CVSSv2 severity (based on CVE-2026-15534, severity increased from "Medium" to "High") CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P") CVSS metrics ("CVSSv2 score" set to 7.5) Plugin metadata Plugin Feed: 202609020019
Version 1.3 Aug 13, 2026, 10:20 AM CVSSv2 severity (based on CVE-2026-15534, severity decreased from "High" to "Medium") CVSS metrics ("CVSSv3 score" set to 5.7. "CVSSv3 vector" set to "CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H") Plugin metadata Detection (updated detection logic) CVSSv3 severity (based on None, severity decreased from "High" to "Medium") Plugin Feed: 202608131020
Version 1.1 Aug 10, 2026, 5:10 AM New Plugin Feed: 202608100510