CVE-2025-5462: ivanti connect_secure Heap-based Buffer Overflow

Vulnerability summary

CVE-2025-5462 is a high (CVSS 7.5) Heap-based Buffer Overflow vulnerability in ivanti connect_secure. EPSS estimates a 1.14% chance of exploitation in the next 30 days, higher than 66.1% of scored vulnerabilities.

Timeline

1. 12-08-2025
   PublishedVulnerability first disclosed.
2. 12-08-2025
   Last modifiedVulnerability information updated.

Description

A heap-based buffer overflow in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 22.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to trigger a denial of service.

• 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().