Detections
Analytics
Linux Distros Unpatched Vulnerability : CVE-2026-2291
high Nessus Plugin ID 314272
Language:
Synopsis
The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.Description
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.- dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS. (CVE-2026-2291)
Note that Nessus relies on the presence of the package as reported by the vendor.
Solution
There is no known solution at this time.See Also
Plugin Details
Severity: High
ID: 314272
File Name: unpatched_CVE_2026_2291.nasl
Version: 1.6
Type: Local
Agent: unix
Family: Misc.
Published: 5/11/2026
Updated: 5/27/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.2
CVSS v2
Risk Factor: Medium
Base Score: 5.8
Temporal Score: 4.9
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P
CVSS Score Source: CVE-2026-2291
CVSS v3
Risk Factor: High
Base Score: 7.3
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:dnsmasq-utils, cpe:/o:centos:centos:7, cpe:/o:debian:debian_linux:11.0, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:debian:debian_linux:dnsmasq, p-cpe:/a:redhat:enterprise_linux:dnsmasq, p-cpe:/a:centos:centos:dnsmasq-utils, p-cpe:/a:centos:centos:dnsmasq
Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 5/11/2026
Reference Information
CVE: CVE-2026-2291