CVE-2025-5456

Description

A buffer over-read vulnerability in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 2.8R2.3-723 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-125

CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
ivanti	connect_secure	< 22.7
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	connect_secure	All
ivanti	policy_secure	< 22.7
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	policy_secure	All
ivanti	zero_trust_access_gateway	All
ivanti	neurons_for_secure_access	< 22.8
ivanti	neurons_for_secure_access	All
ivanti	neurons_for_secure_access	All
ivanti	neurons_for_secure_access	All
ivanti	neurons_for_secure_access	All

References

Advisories & Patches

https://forums.ivanti.com/s/article/August-Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways-Multiple-CVEs?language=en_US

Frequently Asked Questions

What is CVE-2025-5456? +

A buffer over-read vulnerability in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 2.8R2.3-723 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-125 It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-5456? +

CVE-2025-5456 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-5456? +

CVE-2025-5456 affects products from ivanti, specifically: connect_secure, neurons_for_secure_access, policy_secure, zero_trust_access_gateway. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-5456? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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