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CVE-2026-48132 is a high-severity out-of-bounds read vulnerability in Check Point Quantum Security Gateway and Spark Firewall VPN processing when handling IKE traffic over NAT Traversal (NAT-T). The flaw is caused by improper validation of a length value in certain IKE packets processed over UDP port 4500. An attacker-controlled length field can be used without adequate bounds checking, causing the VPN daemon to read beyond the intended buffer or internal data structure. A specially crafted malformed IKE packet can trigger a crash or abnormal termination of the VPN processing service. The issue affects internet-reachable VPN gateways that process NAT-T traffic and results in temporary disruption of VPN negotiations and active tunnel traffic.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Check Point vulnerability addressed in the June 9, 2026 security updates; specific details are not provided in the content.
A separate Check Point IKEv1/NAT-T issue causing VPN service restart, mentioned only as supporting background on IKEv1 technical debt.
An unauthenticated out-of-bounds read vulnerability in Check Point Quantum Security Gateway NAT-T IKE packet handling over UDP/4500 that can crash the VPN processing service and cause denial of service.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.