CVE-2026-48131

VPND IKE Fragment Reassembly - Heap Out-of-Bounds Write via Sequence Number Zero

State: Published
Severity: 8.1 High
Published: May 26, 2026
Updated: May 26, 2026
Reserved: May 20, 2026

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).

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	checkpoint

Weaknesses

CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
Quantum Security Gatewaycheckpoint	R82.10 with Jumbo Hotfix Take 6 or belowAffected R82 with Jumbo Hotfix Take 91 or belowAffected R81.20 with Jumbo Hotfix Take 127 or belowAffected All releases from R81.10 and belowAffected

References

https://support.checkpoint.com/results/sk/sk184981

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