CVE-2026-48135: checkpoint quantum_security_gateway_firmware Heap-based Buffer Overflow

Vulnerability summary

CVE-2026-48135 is a medium (CVSS 5.3) Heap-based Buffer Overflow vulnerability in checkpoint quantum_security_gateway_firmware. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.9% of scored vulnerabilities.

Timeline

1. 26-05-2026
   PublishedVulnerability first disclosed.
2. 27-05-2026
   Last modifiedVulnerability information updated.

Description

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

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().