ZeroDay Findings
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2024-21894

Ivanti Connect Secure and Policy Secure Out-of-bounds Write

Published Oct 30, 2024 · catalog updated Oct 30, 2024 · Ivanti Connect Secure and Policy Secure

Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
19.0%
Remediation
Remediation guidance
Affected products
vendor Ivanti Connect Secure and Policy Secure

A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows an unauthenticated malicious user to send specially crafted requests in-order-to crash the service thereby causing a DoS attack. In certain conditions this may lead to execution of arbitrary code

Technical analysis

Mechanism and impact are interpreted from ingested advisories — not independent exploit research.

  • CWE classification

    No CWE identifiers stored yet.

  • Prerequisites and impact

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

How to fix CVE-2024-21894

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2024-21894 is a unknown public vulnerability record for Ivanti Connect Secure and Policy Secure. CISA lists it as known exploited. Published remediation guidance: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether Ivanti Connect Secure and Policy Secure is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: Ivanti Connect Secure and Policy Secure. Published remediation guidance: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: EPSS 19.0% (30-day exploitation probability). CISA lists it as known exploited. Sources contributing to this record: cve_org, epss, vulncheck_kev. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Related intelligence

  • Exploitation evidence

    Confirmed in CISA KEV since Oct 30, 2024. Listed in CISA KEV and VulnCheck KEV.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 30, 2024 · VulnCheck KEV

    Detected

    A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows an unauthenticated malicious user to send specially crafted requests in-order-to crash the service thereby causing a DoS attack. In certain conditions this may lead to execution of arbitrary code

  2. Oct 30, 2024 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected versions

Enter an installed version to get a verified affected / not-affected result against the ranges below.

  • vendor Ivanti Connect Secure and Policy Secureversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2024-21894

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2024-21894

    30-day exploitation probability 19.0%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2024-21894

    A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows an unauthenticated malicious user to send specially crafted requests in-order-to crash the service thereby causing a DoS attack. In certain conditions this may le

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.