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Actively exploitedKnown ransomware use

CVE-2025-22457 Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability

Ivanti Connect Secure, Policy Secure, and ZTA Gateways contains a stack-based buffer overflow vulnerability that allows a remote unauthenticated attacker to achieve remote code execution.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch nowCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 4 Apr 2025.
  • CISA lists it as known to be used in ransomware campaigns.
  • Rated Critical severity (CVSS 9.0, scored by Vendor).
  • This product type is often exposed to the internet, which is where attackers scan for it first.
  • It has been in the catalogue for 581 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

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.

Affected Versions

ProductVersions
Ivanti Connect SecureSee the vendor advisory
Ivanti Policy SecureSee the vendor advisory
Ivanti Neurons for ZTA gatewaysSee the vendor advisory

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Ivanti Connect Secure, Policy Secure, and ZTA Gateways. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply mitigations as set forth in the CISA instructions linked below.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated critical, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 11 Apr 2025 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

More Exploited Ivanti Flaws

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CVE-2026-118527Ivanti Connect Secure Generation of Predictable Numbers or Identifiers VulnerabilityAdded 30 Oct 2026CVE-2026-111357Ivanti Connect Secure Missing Authentication for Critical Function VulnerabilityAdded 30 Oct 2026CVE-2026-104935Ivanti Connect Secure Authentication Bypass by Spoofing VulnerabilityAdded 13 Oct 2026CVE-2026-10520Ivanti Sentry OS Command Injection VulnerabilityAdded 11 Jun 2026CVE-2026-6973Ivanti Endpoint Manager Mobile (EPMM) Improper Input Validation VulnerabilityAdded 7 May 2026CVE-2026-1340Ivanti Endpoint Manager Mobile (EPMM) Code Injection VulnerabilityAdded 8 Apr 2026

All 38 exploited Ivanti vulnerabilities

Not Sure If You Are Exposed?

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2025-22457
  3. CVE record: CVE-2025-22457
  4. FIRST EPSS
  5. forums.ivanti.com/s/article/April-Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways