CVE-2026-48131
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VPN Service IKE Fragment Handling Denial of Service

Publication date: 2026-05-26

Last updated on: 2026-05-26

Assigner: Check Point Software Technologies Ltd.

Description
The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related functionality).
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Meta Information
Published
2026-05-26
Last Modified
2026-05-26
Generated
2026-06-15
AI Q&A
2026-05-26
EPSS Evaluated
2026-06-14
NVD
CVE-2026-48131
EUVD
EUVD-2026-31818
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
checkpoint vpn *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
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Executive Summary

This vulnerability occurs in the VPN service when it mishandles an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt.

The mishandling can cause the VPN service to terminate unexpectedly.

As a result, this leads to a denial of service, causing a temporary disruption of VPN-related functionality.

Impact Analysis

The vulnerability can cause the VPN service to crash unexpectedly, resulting in a denial of service.

This denial of service leads to temporary disruption of VPN-related functionality, which may prevent users from establishing secure VPN connections.

Such disruptions can impact business operations that rely on VPN connectivity for secure remote access.

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