Ivanti Connect Secure DoS via Heap Buffer Overflow before 22.8R2
CVE-2025-5462 Published on August 12, 2025
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.
Vulnerability Analysis
CVE-2025-5462 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Heap-based Buffer Overflow
A 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().
Products Associated with CVE-2025-5462
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Affected Versions
Ivanti Connect Secure:- Version 22.7R2.8 is unaffected.
- Version 22.8R2 is unaffected.
- Version 22.7R1.5 is unaffected.
- Version 22.8R2.3-723 is unaffected.
- Version 22.8R1.4 (Fix deployed on 02-Aug-2025) is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.