Buffer overflow in Checkpoint Quantum Security Gateway
CVE-2026-85103
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.043 (91.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.037 · newest: 0.043 · change: +0.007
Affected products
- Checkpoint Quantum Security Gateway — versions R81.20 with Jumbo Hotfix Take 165 or below, R82 with Jumbo Hotfix Take 125 or below, R82.10 with Jumbo Hotfix Take 43 or below
- Checkpoint Quantum Security Management — versions R81.20 with Jumbo Hotfix Take 165 or below, R82 with Jumbo Hotfix Take 125 or below, R82.10 with Jumbo Hotfix Take 43 or below
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-85103?
- CVE-2026-85103 is a critical-severity vulnerability in Checkpoint Quantum Security Gateway, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-09-09.
- How severe is CVE-2026-85103?
- Critical severity. CVSS v3 base score is 9.8 out of 10.