The US Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-123039, a Check Point Multiple Products Incorrect Permission Assignment for Critical Resource Vulnerability, to its Known Exploited Vulnerabilities (KEV) catalog on November 13, 2026. CISA adds a flaw to the catalog when it has reliable evidence that attackers are exploiting it in the wild.
What CISA says
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.
— CISA KEV catalog entry for CVE-2026-123039
Key facts
| CVE | CVE-2026-123039 |
|---|---|
| Vendor / product | Check Point Multiple Products |
| Added to KEV | November 13, 2026 |
| Federal deadline | November 16, 2026 |
| Known ransomware use | Unknown |
| Weakness (CWE) | CWE-732, CWE-862 |
| CISA forensic triage | Yes |
| CVSS base score (NVD) | 7.8 High |
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Who has to act, and by when
US federal civilian executive branch agencies are required to remediate the vulnerability by November 16, 2026. CISA urges all organizations to prioritize KEV-listed flaws as part of their vulnerability management.
CISA’s required action for this entry:
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.
References
- CISA Known Exploited Vulnerabilities Catalog https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- NIST NVD — CVE-2026-123039 https://nvd.nist.gov/vuln/detail/CVE-2026-123039
- support.checkpoint.com https://support.checkpoint.com/results/sk/sk1000362
- www.cisa.gov https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
- www.cisa.gov https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk