Local Privilege Escalation in Gaia OS by Check Point
CVE-2026-123039

7.8HIGH

Key Information:

Vendor

Checkpoint
Status
Quantum Security Gateway
Quantum Security Management
Vendor
CVE Published:
12 November 2026

Badges

💰 Ransomware👾 Exploit Exists🦅 CISA Reported📰 News Worthy

What is CVE-2026-123039?

The DynamicCLI daemon in Gaia OS is designed to facilitate command execution. However, it operates with root privileges and listens on a world-writable local socket without proper authentication mechanisms for connecting processes. This oversight allows authenticated local users to execute arbitrary commands with root privileges, potentially leading to severe security implications for the system.

CISA has reported CVE-2026-123039

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2026-123039 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace as recent news articles suggest the vulnerability is being used by ransomware groups.

The CISA's recommendation is: 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.

Affected Version(s)

Quantum Security Gateway R82.10 with Jumbo Hotfix Take 50 or below

Quantum Security Gateway R82.20 with Jumbo Hotfix Take 10 or below

Quantum Security Gateway R82 with Jumbo Hotfix Take 130 or below

News Articles

favicon imageBleepingComputer

Check Point warns of zero-day flaw exploited for root access

Check Point Software has released emergency hotfixes to address a high-severity flaw that hackers have been exploiting to gain root privileges and establish persistence on vulnerable devices since late October.

13 hours ago

favicon imageThe Hacker News

Hackers Exploit PHP2Shell Flaws in Check Point Gateways to Deploy TSGA Backdoor and Wipe ESXi Files

Hackers exploit Check Point gateway flaws to deploy the TSGA backdoor, with some intrusions leading to destructive attacks on ESXi hosts.

15 hours ago

References

https://support.checkpoint.com/results/sk/sk1000362

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 💰

    Used in Ransomware

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • 📰

    First article discovered by The Hacker News

  • Vulnerability published

  • Vulnerability Reserved

.