CVE-2026-48132

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

State: Published
Severity: 8.1 High
Published: May 26, 2026
Updated: Jun 2, 2026
Reserved: May 20, 2026

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

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	checkpoint

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
Quantum Security Gatewaycheckpoint	R82.10 with Jumbo Hotfix Take 6 or belowAffected R82 with Jumbo Hotfix Take 91 or belowAffected R81.20 with Jumbo Hotfix Take 127 or belowAffected All releases from R81.10 and belowAffected

References

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

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