High severity · published May 26, 2026
CVE-2026-48132
VPN service may restart unexpectedly when processing IKE traffic over NAT-T 4500/UDP
8.1
CVSS
2.1%
EPSS
No
On KEV
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).
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QS
Quantum Security Gateway · Check Point
R82.10 with Jumbo Hotfix Take 6 or below; R82 with Jumbo Hotfix Take 91 or below; R81.20 with Jumbo Hotfix Take 127 or below; All releases from R81.10 and below · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48132
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48132
support.checkpoint.com
https://support.checkpoint.com/results/sk/sk184982
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