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9.8

Check Point Quantum may be taken over via VPN certificate

CVE-2026-85103 · published 1 month ago
Summary

The Quantum Security Management and Quantum Security Gateway products have a flaw in how they read VPN certificates, which could let an unknown attacker run their own software on the device. This could give the attacker control over the security appliances that protect your network. Install the vendor's security update right away and only allow trusted certificates.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
checkpoint quantum security gateway R82.10 with Jumbo Hotfix Take 43 or below
checkpoint quantum security management R82.10 with Jumbo Hotfix Take 43 or below
Original advisory text
Heap-based Buffer Overflow in VPN Certificate ASN.1 Decoding
A heap-based buffer overflow in VPN certificate ASN.1 decoding may allow an unauthenticated remote attacker to execute arbitrary code on Check Point Quantum Security Management and Quantum Security Gateway systems.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker full control
Severity
9.8 Critical
Exploitation
4% chance of attack within 30 days
Type
CWE-122Heap-based Buffer Overflow
Timeline
Published9 Sep 2026
Updated7 Oct 2026
First seen9 Sep 2026
Sources
CVE-2026-85103 · NVD
CVE-2026-85103 · MITRE
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