Check Point Multiple Products Improper Certificate Validation Vulnerability
Improper certificate trust validation during VPN negotiation in Check Point Quantum Security Gateway may allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)22 Sept 2026
- Exploited in EUVD (ENISA)22 Sept 2026
- Used by ransomwareno
- EPSS above 10 %54.1%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: 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.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Affected products
- R82.10 with Jumbo Hotfix Take 43 or below
- R81.20 with Jumbo Hotfix Take 165 or below
- R82 with Jumbo Hotfix Take 125 or below
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
-
EPSS peak: 54.2%
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-93616Check Point Multiple Products Path Traversal Vulnerability9.1 · Actively exploited
- CVE-2026-16232Check Point SmartConsole Improper Authentication Vulnerability5.6 · Actively exploited
- CVE-2026-50751Check Point Security Gateway Improper Authentication Vulnerability9.3 · Actively exploited
- CVE-2024-24919Check Point Quantum Security Gateways Information Disclosure Vulnerability9.4 · Background exploitation