CVE-2021-38874Network attack vector

Authenticated cross-tenant information disclosure

Published Apr 27, 2022 · Updated Sep 16, 2024

Authorization bypass in IBM QRadar SIEM 7.3, 7.4, and 7.5 allows remote authenticated users to read cross-tenant information. IBM has not published the affected component, request path, or operation that fails to enforce tenant and domain authorization. Low-privileged network access is required, and the reported impact is limited to reading information outside the account's assigned tenant or domain.

CVSS severity4.3
Medium
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in IBM QRadar SIEM 7.3, 7.4, and 7.5 allows remote authenticated users to read cross-tenant information. IBM has not published the affected component, request path, or operation that fails to enforce tenant and domain authorization. Low-privileged network access is required, and the reported impact is limited to reading information outside the account's assigned tenant or domain.

The record

CVE
CVE-2021-38874
Published
Apr 27, 2022
Updated
Sep 16, 2024
Vendor
IBM
Product
QRadar SIEM
Classifications
T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 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=7.3.3
  2. Affected versionversion=7.4.3
  3. Affected versionversion=7.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · QRadar SIEMversion=7.3.3; version=7.4.3; version=7.5.0

Published CVSS scores

4.3IBMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.8IBMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1213Data from Information Repositories

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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