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

Published: 2025-08-12 Last update: 2025-09-23 Assigner: 3c1d8aa1-5a33-4ea4-8992-aadd6440af75 Source: 3c1d8aa1-5a33-4ea4-8992-aadd6440af75
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-5456 is rated Moderate Risk (54.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.64%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-5456

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-28 0.76% 0.64% -0.12%
2 2026-04-17 0.57% 0.76% +0.18%
3 2026-01-08 — 0.57% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-5456

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 3c1d8aa1-5a33-4ea4-8992-aadd6440af75

Weakness enumeration for CVE-2025-5456

Affected software / configurations for CVE-2025-5456

Vendor Product Version Raw CPE
ivanti connect_secure < 22.7 cpe:2.3:a:ivanti:connect_secure:*:*:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:-:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r1:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r1.1:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r1.2:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r1.3:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r1.4:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r1.5:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r2:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r2.1:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r2.2:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r2.3:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r2.4:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r2.5:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r2.6:*:*:*:*:*:*
ivanti connect_secure 22.7 cpe:2.3:a:ivanti:connect_secure:22.7:r2.7:*:*:*:*:*:*
ivanti policy_secure < 22.7 cpe:2.3:a:ivanti:policy_secure:*:*:*:*:*:*:*:*
ivanti policy_secure 22.7 cpe:2.3:a:ivanti:policy_secure:22.7:-:*:*:*:*:*:*
ivanti policy_secure 22.7 cpe:2.3:a:ivanti:policy_secure:22.7:r1:*:*:*:*:*:*
ivanti policy_secure 22.7 cpe:2.3:a:ivanti:policy_secure:22.7:r1.1:*:*:*:*:*:*
ivanti policy_secure 22.7 cpe:2.3:a:ivanti:policy_secure:22.7:r1.2:*:*:*:*:*:*
ivanti policy_secure 22.7 cpe:2.3:a:ivanti:policy_secure:22.7:r1.3:*:*:*:*:*:*
ivanti policy_secure 22.7 cpe:2.3:a:ivanti:policy_secure:22.7:r1.4:*:*:*:*:*:*
ivanti zero_trust_access_gateway 22.8 cpe:2.3:a:ivanti:zero_trust_access_gateway:22.8:r2.2:*:*:*:*:*:*
ivanti neurons_for_secure_access < 22.8 cpe:2.3:a:ivanti:neurons_for_secure_access:*:*:*:*:*:*:*:*
ivanti neurons_for_secure_access 22.8 cpe:2.3:a:ivanti:neurons_for_secure_access:22.8:r1:*:*:*:*:*:*
ivanti neurons_for_secure_access 22.8 cpe:2.3:a:ivanti:neurons_for_secure_access:22.8:r1.1:*:*:*:*:*:*
ivanti neurons_for_secure_access 22.8 cpe:2.3:a:ivanti:neurons_for_secure_access:22.8:r1.2:*:*:*:*:*:*
ivanti neurons_for_secure_access 22.8 cpe:2.3:a:ivanti:neurons_for_secure_access:22.8:r1.3:*:*:*:*:*:*

References for CVE-2025-5456

cvelogic Threat Intelligence