CVE-2026-48132

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

At a glance

Severity: HIGH 8.1
EPSS: EPSS 2.14 % · percentile 82 (2026-10-27)
State: PUBLISHED
Published: 2026-05-26
Updated: 2026-06-02
Assigner: checkpoint
NVD status: Awaiting Analysis

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).

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	checkpoint
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · cve@checkpoint.com (Secondary)

Weaknesses (CWE)

CWE-125

European references

ENISA EUVD · EUVD-2026-31819
GCVE · GCVE-0-2026-48132

CERT-FR advisories

CERTFR-2026-AVI-0650 — Multiples vulnérabilités dans les produits Check Point · cert.ssi.gouv.fr

Affected products

Product	Versions
checkpoint · Quantum Security Gateway	affected R82.10 with Jumbo Hotfix Take 6 or below ; affected R82 with Jumbo Hotfix Take 91 or below ; affected R81.20 with Jumbo Hotfix Take 127 or below ; affected All releases from R81.10 and below

References

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

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD