CVE-2024-24300Public exploitNetwork attack vector

Account takeover via invariant authentication cookie

Published Feb 14, 2024 · Updated Aug 16, 2024

Improper access control in 4ipnet EAP767 3.42.00 allows remote attackers to access a user's management session via a fixed cookie. The web management interface identifies users solely by username and password cookie values that remain identical across repeated logins. Anyone who obtains those invariant values can replay them to inherit the account's privileges and reach authenticated management functions without a fresh login.

CVSS severity9.8
Critical
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in 4ipnet EAP767 3.42.00 allows remote attackers to access a user's management session via a fixed cookie. The web management interface identifies users solely by username and password cookie values that remain identical across repeated logins. Anyone who obtains those invariant values can replay them to inherit the account's privileges and reach authenticated management functions without a fresh login.

The record

CVE
CVE-2024-24300
Published
Feb 14, 2024
Updated
Aug 16, 2024
Vendor
4ipnet
Product
EAP767
Classifications
CWE-284, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 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=3.42.00

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

4ipnet · EAP767version=3.42.00

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

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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