---
id: CVE-2026-91843
title: >-
  A stack overflow during the unauthenticated login process may allow an
  attacker to run arbitrary code remotely with root privileges.
summary: >-
  A stack overflow during the unauthenticated login process may allow an
  attacker to run arbitrary code remotely with root privileges.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-121
vendor: checkpoint
product: Quantum Security Management
affected:
  - quantum_security_management R82.10 with Jumbo Hotfix Take 44 or below
  - quantum_security_management R82 with Jumbo Hotfix Take 126 or below
  - quantum_security_management R81.20 with Jumbo Hotfix Take 166 or below
  - quantum_security_management R81.10 (EOS) with Jumbo Hotfix Take 190 or below
  - quantum_security_management R81 (EOS)
  - quantum_security_management R80.40 (EOS)
  - quantum_security_management R80.30 (EOS)
  - quantum_security_management R80.20 (EOS)
  - quantum_security_management R80.10 (EOS)
  - quantum_security_management R80 (EOS)
published: '2026-09-16'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T19:34:36.657'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91843'
references:
  - url: 'https://support.checkpoint.com/results/sk/sk1000155'
    label: cve@checkpoint.com
tags:
  - nvd
  - exploit-available
  - cve.org
epss: 0.00519
epssPercentile: 0.41679
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/HORKimhab/CVE-2026-91843'
  checkedAt: '2026-09-26T09:06:05.837Z'
exploitAvailable: true
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-17T03:56:52.301574Z'
ingestedAt: '2026-09-16T13:56:12.620Z'
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.