CVE-2026-48132

High

Published: 26 May 2026

Published

26 May 2026

Modified

26 May 2026

KEV Added

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Patch

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CVSS Score v3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0214 79.8th percentile

Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-48132 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Checkpoint (inferred from references). Its CVSS base score is 8.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked in the top 20.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-31819

Vulnerability details

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).

CWE(s): CWE-125

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1499.004 Application or System Exploitation Impact

Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.

attack.mitre.org →

Why these techniques?

Malformed IKE/NAT-T packet triggers out-of-bounds read (CWE-125) that crashes the VPN service, directly enabling remote application DoS via crafted packet exploitation.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0