CVE-2026-48132CWE-125

VPN service may restart unexpectedly when processing IKE traffic over NAT-T 4500/UDP

High · published May 26, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
33.5
In the wild
Unconfirmed
What it is

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).

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00404 · 33.5th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-05-26T12:56Z
EPSS history
Timeline
  • 26 MAY 12:56Z
    VPN service may restart unexpectedly when processing IKE traffic over NAT-T 4500/UDP
    cvelistv5