CVE-2026-48132Network attack vector

VPN service interruption via unchecked IKE length

Published May 26, 2026 · Updated May 26, 2026

Out-of-bounds read in Check Point Quantum Security Gateway allows remote attackers to interrupt VPN service via malformed IKE NAT-T packets. IKE handling in the VPN process fails to validate a packet length before reading or processing memory beyond the intended boundary. Reachability requires IKE over NAT-T on UDP port 4500; a successful packet terminates and restarts VPN processing, temporarily interrupting negotiations and traffic.

CVSS severity8.1
High
EPSS probability2.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Check Point Quantum Security Gateway allows remote attackers to interrupt VPN service via malformed IKE NAT-T packets. IKE handling in the VPN process fails to validate a packet length before reading or processing memory beyond the intended boundary. Reachability requires IKE over NAT-T on UDP port 4500; a successful packet terminates and restarts VPN processing, temporarily interrupting negotiations and traffic.

The record

CVE
CVE-2026-48132
Published
May 26, 2026
Updated
May 26, 2026
Vendor
Check Point Software Technologies Ltd.
Product
Quantum Security Gateway
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 26, 2026CVE publishedPublication date reported by the CVE source.
  2. May 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All releases from R81.10 and below
  2. Affected versionversion=R81.20 with Jumbo Hotfix Take 127 or below
  3. Affected versionversion=R82.10 with Jumbo Hotfix Take 6 or below
  4. Affected versionversion=R82 with Jumbo Hotfix Take 91 or below

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Check Point Software Technologies Ltd. · Quantum Security Gatewayversion=All releases from R81.10 and below; version=R81.20 with Jumbo Hotfix Take 127 or below; version=R82.10 with Jumbo Hotfix Take 6 or below; version=R82 with Jumbo Hotfix Take 91 or below

Published CVSS scores

8.1National Vulnerability DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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