CVE-2026-91843

critical

Description

A stack overflow during the unauthenticated login process may allow an attacker to run arbitrary code remotely with root privileges.

References

https://www.bleepingcomputer.com/news/security/infratrust-report-warns-network-management-systems-under-attack/

https://www.bleepingcomputer.com/news/security/check-point-patches-management-server-zero-day-exploited-in-attacks/

https://thehackernews.com/2026/09/check-point-warns-of-management-server.html

https://www.securityweek.com/check-point-kaspersky-tanium-patch-product-vulnerabilities/

https://www.bleepingcomputer.com/news/security/check-point-warns-critical-flaw-lets-hackers-execute-code-as-root/

https://securityaffairs.com/199279/security/check-point-fixes-critical-cve-2026-91843-allowing-root-code-execution.html

https://thehackernews.com/2026/09/critical-check-point-management-server.html

https://support.checkpoint.com/results/sk/sk1000155

Details

Source: Mitre, NVD

Published: 2026-09-16

Updated: 2026-09-18

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.005