CVE-2024-43181Network attack vector

User impersonation via persistent logout sessions

Published Feb 4, 2026 · Updated Feb 4, 2026

Insufficient session expiration in IBM Concert 1.0.0 through 2.1.0 allows remote authenticated users to impersonate another user after logout. The logout operation fails to invalidate the active session, so requests using the retained session remain authenticated. Exploitation requires authenticated access and a still-valid session associated with another user, enabling actions under that user's identity.

CVSS severity6.3
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session expiration in IBM Concert 1.0.0 through 2.1.0 allows remote authenticated users to impersonate another user after logout. The logout operation fails to invalidate the active session, so requests using the retained session remain authenticated. Exploitation requires authenticated access and a still-valid session associated with another user, enabling actions under that user's identity.

The record

CVE
CVE-2024-43181
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
IBM
Product
Concert
Classifications
CWE-613, T1550.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=1.0.0 <=2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · Concertversion=1.0.0 <=2.1.0

Published CVSS scores

6.3IBM X-ForceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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