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KEV Checker

CVE-2026-123039: in the CISA KEV catalogue

Check Point Multiple Products Incorrect Permission Assignment for Critical Resource Vulnerability. CISA added CVE-2026-123039 to the Known Exploited Vulnerabilities catalogue on 2026-11-13 with a default due date of 2026-11-16. Known ransomware campaign use: Unknown. Forensic triage flag: Yes.

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 description)

Vendor / product
Check Point Multiple Products
CWE
CWE-732, CWE-862
CISA 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.
EPSS
1.3%, percentile 70 (scored 2026-11-13)

EPSS puts about 1.3 in 100 odds (1.3%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 70% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.

Vendor and reference links (from CISA)

Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.

Data dates. CISA KEV catalogue version 2026.11.13, released 2026-11-13, 1,781 entries (checked 2026-11-13). EPSS model v2026.06.15, scored 2026-11-13, 406,184 CVEs. Sources: CISA and FIRST (EPSS by FIRST; scores generated by Empirical Security). Copied to our own database and refreshed automatically; if a refresh fails, the previous copy keeps serving with its own date.

Frequently asked questions

Is CVE-2026-123039 in the CISA KEV catalogue?

Yes. CISA added CVE-2026-123039 (Check Point Multiple Products Incorrect Permission Assignment for Critical Resource Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2026-11-13. CISA's default due date for it is 2026-11-16.

Is CVE-2026-123039 used in ransomware attacks?

CISA marks known ransomware campaign use as Unknown for CVE-2026-123039. That means CISA lacks confirmation, not that ransomware groups do not use it.

What should I do about CVE-2026-123039?

CISA's 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.

Sources