CVE-2025-22457Known exploitationPublic exploitNetwork attack vector

Unauthenticated code execution via stack overflow

Published Apr 3, 2025 · Updated Aug 4, 2026

Stack-based buffer overflow in Ivanti Connect Secure before 22.7R2.6 allows remote attackers to execute arbitrary code. The appliance web process overwrites a stack buffer while handling remote input, but Ivanti has not disclosed the affected function or request field. No authentication or user interaction is required; Policy Secure before 22.7R1.4 and ZTA Gateways before 22.8R2.2 are also affected, although production ZTA gateways are not exploitable.

CVSS severity9.0
Critical
EPSS probability99.98%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stack-based buffer overflow in Ivanti Connect Secure before 22.7R2.6 allows remote attackers to execute arbitrary code. The appliance web process overwrites a stack buffer while handling remote input, but Ivanti has not disclosed the affected function or request field. No authentication or user interaction is required; Policy Secure before 22.7R1.4 and ZTA Gateways before 22.8R2.2 are also affected, although production ZTA gateways are not exploitable.

The record

CVE
CVE-2025-22457
Published
Apr 3, 2025
Updated
Aug 4, 2026
Vendor
Ivanti
Product
Connect Secure
Classifications
CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 1, 2025Exploitation reportedUNC5221 exploitation campaign
  2. Apr 3, 2025CVE publishedPublication date reported by the CVE source.
  3. Aug 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ivanti · Connect SecureAffected versions are unavailable in this record.
Ivanti · Neurons for ZTA GatewaysAffected versions are unavailable in this record.
Ivanti · Policy SecureAffected versions are unavailable in this record.

Published CVSS scores

9.0IvantiCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo