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Vulnerability record · CVE-2026-48132 · published 26 May 2026

CVE-2026-48132: Out-of-bounds read vulnerability

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).

8.1 CVSS 3.1 High EPSS 0.40% · top 68.0% CWE-125 · Out-of-bounds read Awaiting Analysis
8.1CVSS 3.1 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
24 Jul 2026Last modified by NVD

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).

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://support.checkpoint.com/results/sk/sk184982

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-48132), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.