CVE-2026-123039 Check Point Multiple Products: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Nov 16, 2026
What to do
- Install Check Point's security update for Multiple Products. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Patch edge devices first — attackers often start scanning for them within hours of a fix.
- Never expose the device's admin page to the internet.
- After patching a device that was exposed, follow the vendor's compromise checks, end active sessions and change passwords.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: They face the internet and guard the whole network, so a flaw here can hand attackers a way in — and these devices usually run no antivirus, so break-ins go unnoticed.
The details
- Official name
- Check Point Multiple Products Incorrect Permission Assignment for Critical Resource Vulnerability
- Product
- Check Point Multiple Products
- CISA description
- Check Point Firewall, Multi-Domain Security Management Server, Scalable Platforms, Security Gateway, and Security Management Server contain an incorrect permissions assignment for critical resources vulnerability when the Gaia OS DynamicCLI daemon runs as root and listens on a world-writable local socket without authenticating connecting processes. An authenticated local user can send a command to the socket and have it executed as root.
- Type of flaw
- Login or permission bypass (CWE-732, CWE-862)
- Confirmed exploited
- Nov 13, 2026
- US federal patch deadline
- Nov 16, 2026
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Answering about CVE-2026-123039 ·
Questions about CVE-2026-123039
Is CVE-2026-123039 being exploited?
Yes. CISA added CVE-2026-123039 to its Known Exploited Vulnerabilities catalog on Nov 13, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-123039?
Install Check Point's security update for Multiple Products. If no update exists, follow the vendor's workaround or stop using the product until one ships. Patch edge devices first — attackers often start scanning for them within hours of a fix.
Am I affected by CVE-2026-123039?
Only if you use Check Point Multiple Products. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.