PT-2026-7953 · Unknown · Nagios Host

Vladislav Berghici · CVE-2026-2043 · Published 2026-02-12 · Updated 2026-06-22

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Nagios Host (affected versions not specified)

Description Remote authenticated attackers can execute arbitrary code on affected installations. The issue stems from insufficient validation of a user-supplied string within the esensors websensor configwizard func() function before it is used in a system call. This allows the attacker to execute code with the privileges of the service account.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2026-2043

ZDI-26-072

Affected Products

Nagios Host

References · 9

• https://nagios.com/changelog/nagios-xi/nagios-xi-2026r1-0-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-2043 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-2043 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-26-072 · Security Note
• https://t.me/cveNotify/152993 · Telegram Post
• https://t.me/CVEtracker/45321 · Telegram Post
• https://twitter.com/TheHackerWire/status/2026373587947630595 · Twitter Post
• https://t.me/CSIRT_italia/3674 · Telegram Post
• https://twitter.com/CVEnew/status/2024988729199497321 · Twitter Post