CVE-2021-39088

Local privilege escalation through undisclosed flaw

Published Jul 28, 2022 · Updated Sep 16, 2024

Local privilege escalation in IBM QRadar SIEM 7.3, 7.4, and 7.5 allows local users to gain elevated privileges. IBM has not published the affected component, the flawed operation, or the input that reaches it. Exploitation requires local access, high attack complexity, and combination with other undisclosed vulnerabilities, after which privileges can be elevated.

CVSS severity7.4
High
EPSS probability0.19%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege escalation in IBM QRadar SIEM 7.3, 7.4, and 7.5 allows local users to gain elevated privileges. IBM has not published the affected component, the flawed operation, or the input that reaches it. Exploitation requires local access, high attack complexity, and combination with other undisclosed vulnerabilities, after which privileges can be elevated.

The record

CVE
CVE-2021-39088
Published
Jul 28, 2022
Updated
Sep 16, 2024
Vendor
IBM
Product
QRadar SIEM
Classifications
T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 28, 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
  2. Affected versionversion=7.4
  3. Affected versionversion=7.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

IBM · QRadar SIEMversion=7.3; version=7.4; version=7.5

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4IBM CorporationCVSS:3.0/AV:L/AC:H/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.

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

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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