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CVE-2026-85103 is a heap-based buffer overflow in VPN certificate ASN.1 decoding on Check Point Quantum Security Gateway and Quantum Security Management systems. A specially crafted certificate can corrupt heap memory when attacker-controlled ASN.1 certificate fields are parsed during VPN negotiation. Because this processing occurs before user identity verification, an unauthenticated remote attacker may execute arbitrary code. The issue is rated CVSS v3.1 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
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An ASN.1 decoding heap-overflow vulnerability that can lead to remote code execution in affected Check Point products.
An ASN.1-decoding heap-overflow vulnerability that can lead to remote code execution in affected Check Point products.
A critical, network-reachable heap-based buffer overflow in VPN certificate ASN.1 decoding affecting Check Point Quantum Security Management and Quantum Security Gateway systems. An unauthenticated attacker may be able to execute arbitrary code.
A critical, unauthenticated remote-code-execution vulnerability caused by a heap overflow while decoding ASN.1 VPN certificate data. A crafted certificate can corrupt heap memory during VPN negotiation on affected Check Point systems.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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