CVE-2026-48132
VPN service may restart unexpectedly when processing IKE traffic over NAT-T 4500/UDP
Exploited
Not listed
EPSS
0.004
32.3th percentile
Discovered by
Not disclosed
Published
May 26, 2026
Assigned by checkpoint
Description
The Security Gateway does not correctly validate a length value in certain IKE packets when NAT-T is used (4500/UDP). As a result, a specially crafted or malformed packet can cause the VPN processing service to terminate unexpectedly, leading to denial of service (temporary interruption of VPN negotiations/traffic).
Weakness: CWE-125
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Check Point | Quantum Security Gateway | Firewall / NGFW | cna-assigner |
Vendor-reported products (1)
- checkpoint · Quantum Security Gateway