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CVE-2026-48132— VPN service may restart unexpectedly when processing IKE traffic over NAT-T 4500/UDP

Quick assessment

Affected
checkpoint Quantum Security Gateway
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Check Point Security Gateway是以色列Check Point公司的一系列网络安全网关设备。 Check Point Security Gateway存在安全漏洞，该漏洞源于使用NAT-T时对特定IKE数据包中长度值验证不正确，可能导致特制或畸形数据包导致VPN处理服务意外终止，造成拒绝服务。

CVSS 8.1 · High EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 4

VendorProduct Version RangeStatus
checkpoint Quantum Security Gateway R82.10 with Jumbo Hotfix Take 6 or below affected
R82 with Jumbo Hotfix Take 91 or below affected
R81.20 with Jumbo Hotfix Take 127 or below affected
All releases from R81.10 and below affected
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I. Basic Information for CVE-2026-48132

Vulnerability Information
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Vulnerability Title
VPN service may restart unexpectedly when processing IKE traffic over NAT-T 4500/UDP
Source: CVE Program / CVE List V5
Vulnerability Description
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).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Check Point Security Gateway 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Check Point Security Gateway是以色列Check Point公司的一系列网络安全网关设备。 Check Point Security Gateway存在安全漏洞，该漏洞源于使用NAT-T时对特定IKE数据包中长度值验证不正确，可能导致特制或畸形数据包导致VPN处理服务意外终止，造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
checkpoint Quantum Security Gateway R82.10 with Jumbo Hotfix Take 6 or below -

II. Public POCs for CVE-2026-48132

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III. Intelligence Information for CVE-2026-48132

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Vendor Advisories for CVE-2026-48132 (1)

Same Patch Batch · checkpoint · 2026-05-26 · 6 CVEs total

CVE-2026-48131 8.1 HIGH VPND IKE Fragment Reassembly - Heap Out-of-Bounds Write via Sequence Number Zero
CVE-2026-48133 7.5 HIGH Identity Awareness Captive Portal - Unauthenticated Local File Inclusion
CVE-2026-48134 5.6 MEDIUM SQL injection issue in UserCheck Portal when DLP Software Blade is active
CVE-2026-48135 5.3 MEDIUM HTTP service can incorrectly process malformed HTTP requests
CVE-2026-48136 4.1 MEDIUM Authenticated Administrator Role-Based Access Control Bypass in Compliance

IV. Related Vulnerabilities

Same product: Quantum Security Gateway
Same vendor: checkpoint
Same weakness: CWE-125

V. Comments for CVE-2026-48132

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