CVE Catalog

CVE-2026-48132

HighCVSS 8.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

High risk
2.14%

80th percentile - higher than 80% of all known CVEs

Summary

The Security Gateway incorrectly validates a length value in IKE packets when NAT-T is used (port 4500/UDP). A specially crafted packet can cause the VPN processing service to terminate unexpectedly, leading to denial of service.

Risk Assessment

A DoS attack can temporarily prevent VPN tunnel establishment and block network traffic, disrupting organizational operations.

Recommendation

Install the vendor patch that correctly validates the length in IKE packets with NAT-T.

Related vulnerabilities

Original NVD description (English source)

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).

Vulnerability data from NVD (NIST) · CISA KEV · EPSS