What is CVE-2026-48135?

CVE-2026-48135 is a medium-severity vulnerability in Checkpoint Quantum Security Gateway, classified under Heap-based Buffer Overflow. CVSS score: 5.3/10. Published 2026-05-26.

How severe is CVE-2026-48135?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Buffer overflow in Checkpoint Quantum Security Gateway

CVE-2026-48135

A Check Point HTTP-based service can incorrectly handle malformed HTTP requests. The issue is related to HTTP request parsing and validation.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (23.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Checkpoint Quantum Security Gateway — versions 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

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

cve@checkpoint.com

Frequently asked questions

What is CVE-2026-48135?: CVE-2026-48135 is a medium-severity vulnerability in Checkpoint Quantum Security Gateway, classified under Heap-based Buffer Overflow. CVSS score: 5.3/10. Published 2026-05-26.
How severe is CVE-2026-48135?: Medium severity. CVSS v3 base score is 5.3 out of 10.