High severity · published Aug 12, 2025
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…
7.5
CVSS
1.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CS
Connect Secure · Ivanti
before 22.7; 22.7; 22.7; 22.7; 22.7; 22.7; +10 more · source: NVD
NF
Neurons For Secure Access · Ivanti
before 22.8; 22.8; 22.8; 22.8; 22.8 · source: NVD
PS
Policy Secure · Ivanti
before 22.7; 22.7; 22.7; 22.7; 22.7; 22.7; +1 more · source: NVD
ZT
Zero Trust Access Gateway · Ivanti
22.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-5456
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-5456
Vendor Advisory
https://forums.ivanti.com/s/article/August-Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways-Multiple-CVEs?language=en_US
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