CVE-2024-37401Network attack vector

Service interruption via IPsec out-of-bounds read

Published Dec 11, 2024 · Updated Dec 12, 2024

An out-of-bounds read in IPsec in Ivanti Connect Secure before 22.7R2.1 allows remote attackers to interrupt the service. Ivanti has not disclosed which IPsec parser or field performs the out-of-bounds read while processing untrusted traffic. No authentication or user interaction is required; crafted IPsec traffic can make the gateway unavailable, but the precise failure mode is undisclosed.

CVSS severity7.5
High
EPSS probability1.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
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

An out-of-bounds read in IPsec in Ivanti Connect Secure before 22.7R2.1 allows remote attackers to interrupt the service. Ivanti has not disclosed which IPsec parser or field performs the out-of-bounds read while processing untrusted traffic. No authentication or user interaction is required; crafted IPsec traffic can make the gateway unavailable, but the precise failure mode is undisclosed.

The record

CVE
CVE-2024-37401
Published
Dec 11, 2024
Updated
Dec 12, 2024
Vendor
Ivanti
Product
Connect Secure
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 2024Record 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=22.7R2.1 <22.7R2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ivanti · Connect Secureversion=22.7R2.1 <22.7R2.1

Published CVSS scores

7.5HackerOne CNACVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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

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