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Vulnerability record · CVE-2026-48131 · published 26 May 2026

CVE-2026-48131: Heap-based buffer overflow vulnerability

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).

8.1 CVSS 3.1 High EPSS 0.40% · top 68.0% CWE-122 · Heap-based buffer overflow 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 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).

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/sk184981

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Source: NIST National Vulnerability Database (record CVE-2026-48131), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.