CVE-2024-37400Network attack vector

Service hang via out-of-bounds read

Published Nov 13, 2024 · Updated Nov 13, 2024

Out-of-bounds read in Ivanti Connect Secure before 22.7R2.3 allows remote attackers to cause a service hang over the network. The public advisory does not identify the affected component or disclose how the out-of-bounds read enters an infinite loop. A network-reachable gateway can be attacked without authentication or user interaction, leaving its secure-access service unavailable.

CVSS severity7.5
High
EPSS probability2.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Ivanti Connect Secure before 22.7R2.3 allows remote attackers to cause a service hang over the network. The public advisory does not identify the affected component or disclose how the out-of-bounds read enters an infinite loop. A network-reachable gateway can be attacked without authentication or user interaction, leaving its secure-access service unavailable.

The record

CVE
CVE-2024-37400
Published
Nov 13, 2024
Updated
Nov 13, 2024
Vendor
Ivanti
Product
Connect Secure
Classifications
CWE-125, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 13, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=22.7R2.3
  2. Affected versionversion=22.7R2.3 <22.7R2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ivanti · Connect Secureversion=22.7R2.3; version=22.7R2.3 <22.7R2.3

Published CVSS scores

7.5HackerOneCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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
T1499Endpoint Denial of Service

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

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Your stack

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