What is the CVSS score of CVE-2025-22457?

CVE-2025-22457 has a CVSS 3.1 base score of 9.0 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 53.7%.

Which versions of Connect Secure are affected by CVE-2025-22457?

Organizations using Ivanti Connect Secure face critical risk from CVE-2025-22457, a stack-based buffer overflow vulnerability rated CVSS 9.0.

Is there a public PoC exploit available for CVE-2025-22457?

Yes, a public proof-of-concept exploit is available for CVE-2025-22457. Prioritise patching immediately. EPSS: 53.7%.

How to fix or mitigate CVE-2025-22457?

Within 24 hours: Identify all affected systems running Ivanti Connect Secure and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

Connect Secure CVE-2025-22457

CRITICAL

Stack-based Buffer Overflow (CWE-121)

2025-04-03 3c1d8aa1-5a33-4ea4-8992-aadd6440af75

Ivanti Buffer Overflow RCE Stack Overflow Connect Secure Policy Secure Zero Trust Access Gateway

9.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.0 CRITICAL

AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:34 vuln.today

Added to CISA KEV

Oct 24, 2025 - 14:29 cisa

CISA KEV

PoC Detected

Oct 24, 2025 - 14:29 vuln.today

Public exploit code

CVE Published

Apr 03, 2025 - 16:15 nvd

CRITICAL 9.0

DescriptionCVE.org

A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6, Ivanti Policy Secure before version 22.7R1.4, and Ivanti ZTA Gateways before version 22.8R2.2 allows a remote unauthenticated attacker to achieve remote code execution.

AnalysisAI

Ivanti Connect Secure, Policy Secure, and ZTA Gateways contain a stack-based buffer overflow enabling unauthenticated remote code execution, the third major Ivanti VPN zero-day within fifteen months, exploited by UNC5221.

Technical ContextAI

The CWE-121 stack overflow allows memory corruption through crafted requests. Mandiant attributed initial exploitation to UNC5221 with deployment of the TRAILBLAZE dropper and BRUSHFIRE backdoor.