CVEs / CVE-2026-123039
CVE-2026-123039: Check Point Multiple Products Incorrect Permission Assignment for Critical Resource Vulnerability
- Known exploited in the CISA KEV catalog since 13 Nov 2026
- high 7.8 CVSS 3.1 (from the CNA)
- EPSS 2.19% chance of exploitation in the next 30 days, higher than 82% of CVEs (14 Nov 2026)
- Last changed at its sources
Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.
Check your servers with Stackurity Already using Stackurity? Search for CVE-2026-123039
Summary
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.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| checkpoint Quantum Security Gateway | R82.10 with Jumbo Hotfix Take 50 or below | — |
| checkpoint Quantum Security Gateway | R82.20 with Jumbo Hotfix Take 10 or below | — |
| checkpoint Quantum Security Gateway | R82 with Jumbo Hotfix Take 130 or below | — |
| checkpoint Quantum Security Gateway | R81.20 with Jumbo Hotfix Take 173 or below | — |
| checkpoint Quantum Security Management | R82.10 with Jumbo Hotfix Take 50 or below | — |
| checkpoint Quantum Security Management | R82.20 with Jumbo Hotfix Take 10 or below | — |
| checkpoint Quantum Security Management | R82 with Jumbo Hotfix Take 130 or below | — |
| checkpoint Quantum Security Management | R81.20 with Jumbo Hotfix Take 173 or below | — |
Exploitation
| In CISA KEV since | 13 Nov 2026 |
|---|---|
| Due date for US federal agencies | 16 Nov 2026 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-732, CWE-862 |
On the Stackurity blog
References
- CVE-2026-123039 on NVD
- CVE-2026-123039 in the CISA KEV catalog
- https://support.checkpoint.com/results/sk/sk1000362 (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- https://support.checkpoint.com/results/sk/sk1000362
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.