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Vulnerabilities / CVE-2026-85102

CVE-2026-85102

Published 2026-09-09 · published (not yet in NVD)

CVE-2026-85102

Improper Certificate Validation in Quantum Security Gateway

Exploited in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2026-09-22, with a fix-by date of 2026-09-25. Patch it first.

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.

9.8 CRITICAL
CVSS 3.1 · CNA
54%
chance of exploitation in the next 30 days (EPSS; in the top 1% of all CVEs)

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.

Scores

Affected products

  • checkpoint Quantum Security Gateway: R82.10 with Jumbo Hotfix Take 43 or below; R82 with Jumbo Hotfix Take 125 or below; R81.20 with Jumbo Hotfix Take 165 or below

Weakness: CWE-295

1 references (advisories, patches, write-ups)

Sources: CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.

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