CVE-2026-123039

Published Nov 12, 2026

Last updated 14 hours ago

Gaia OS

Overview

AI description

Automated description summarized from trusted sources.

CVE-2026-123039 is a local privilege escalation vulnerability affecting the DynamicCLI service (specifically the DynamicCLI IPC interface) in Check Point's Gaia operating system. The vulnerability stems from a missing authorization flaw where the DynamicCLI daemon runs as root and listens on a world-writable local socket (`/tmp/dynamic_socket`) without authenticating connecting processes. This allows any authenticated local user or lower-privileged process to execute arbitrary commands with root privileges by writing a single request to the socket. In late October and early November 2026, threat actors actively exploited this vulnerability in the wild alongside "PHP2Shell" remote code execution flaws. After gaining initial access to Check Point Security Gateways through the Mobile Access portal, attackers leveraged CVE-2026-123039 to escalate their privileges from a restricted service account to root. This elevated access allowed them to deploy persistent PHP webshells, install the TSGA backdoor, and in some cases, pivot to internal networks to deploy wiper malware. Check Point has since released emergency hotfixes to address the vulnerability.

Description: The Gaia OS DynamicCLI daemon runs as root and listens on a world-writable local socket (/tmp/dynamic_socket) without authenticating connecting processes. An authenticated local user can send a command to the socket and have it executed as root.
Source: cve@checkpoint.com
NVD status: Undergoing Analysis

Risk scores

CVSS 3.1

Type: Secondary
Base score: 7.8
Impact score: 5.9
Exploitability score: 1.8
Vector string: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: HIGH

Known exploits

Data from CISA

Vulnerability name: Check Point Multiple Products Incorrect Permission Assignment for Critical Resource Vulnerability
Exploit added on: Nov 13, 2026
Exploit action due: Nov 16, 2026
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Weaknesses

cve@checkpoint.com: CWE-732

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score: 10

References

Sources include official advisories and independent security research.