The vulnerability CVE-2026-48132 in Check Point Quantum Security Gateway is due to an out-of-bounds read (CWE-125) caused by improper validation of a length field in IKE packets when NAT Traversal (NAT-T) is enabled on UDP port 4500. This can lead to the VPN processing service terminating unexpectedly, causing denial of service through temporary disruption of VPN traffic and negotiation. The affected versions include R82.10 with Jumbo Hotfix Take 19 or below, R82 with Jumbo Hotfix Take 91 or below, R81.20 with Jumbo Hotfix Take 127 or below, and all releases from R81.10 and below. The CVSS v3.1 base score is 7.4 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H), reflecting network attack vector, high attack complexity, no privileges or user interaction required, unchanged scope, high confidentiality impact, no integrity impact, and high availability impact. No patch or official remediation guidance has been published by the vendor yet, and no known exploits have been reported in the wild.

Successful exploitation causes the VPN processing service on the Quantum Security Gateway to terminate unexpectedly, resulting in denial of service. This leads to temporary interruption of VPN negotiations and traffic, impacting availability. There is no direct impact on integrity, but confidentiality impact is rated high in the CVSS vector, possibly reflecting potential information exposure during the crash. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, organizations should monitor Check Point advisories for updates. No vendor-provided temporary mitigations or workarounds are currently documented. Network administrators may consider limiting exposure of UDP port 4500 or applying network-level protections to reduce risk, but these are not confirmed mitigations specific to this vulnerability.