Vulnerability · Published May 26, 2026 · Assigned by checkpoint
CVE-2026-48132VPN service may restart unexpectedly when processing IKE traffic over NAT-T 4500/UDP
High 8.1
In plain English
A high-severity out-of-bounds read in Quantum Security Gateway from checkpoint. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)2.1%top 17.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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).
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| checkpoint | Quantum Security Gateway | R82.10 with Jumbo Hotfix Take 6 or belowR82 with Jumbo Hotfix Take 91 or belowR81.20 with Jumbo Hotfix Take 127 or belowAll releases from R81.10 and below |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H