Heap-based Buffer Overflow Vulnerability in Check Point Quantum Security Systems
CVE-2026-85103

9.8CRITICAL

Key Information:

Vendor

Checkpoint
Status
Quantum Security Gateway
Quantum Security Management
Vendor
CVE Published:
9 September 2026

What is CVE-2026-85103?

A heap-based buffer overflow vulnerability in the ASN.1 decoding process of VPN certificates can be exploited by unauthenticated remote attackers. By leveraging this flaw, they may execute arbitrary code on vulnerable Check Point Quantum Security Management and Quantum Security Gateway systems, leading to potential unauthorized access and control over the affected systems.

Affected Version(s)

Quantum Security Gateway R82.10 with Jumbo Hotfix Take 43 or below

Quantum Security Gateway R82 with Jumbo Hotfix Take 125 or below

Quantum Security Gateway R81.20 with Jumbo Hotfix Take 165 or below

References

https://support.checkpoint.com/results/sk/sk1000118

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.