Quantum Security Gateway
CVE-2026-85103: 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.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.1 9.8
EPSS3.7%Chance of exploitation in 30 days
Public exploitNot tracked
FixNot yet
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Quantum Security Gateway R82.10 with Jumbo Hotfix Take 43 or below | See the advisory |
| Quantum Security Gateway R82 with Jumbo Hotfix Take 125 or below | See the advisory |
| Quantum Security Gateway R81.20 with Jumbo Hotfix Take 165 or below | See the advisory |
| Quantum Security Management R82.10 with Jumbo Hotfix Take 43 or below | See the advisory |
| Quantum Security Management R82 with Jumbo Hotfix Take 125 or below | See the advisory |
| Quantum Security Management R81.20 with Jumbo Hotfix Take 165 or below | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.