CVE-2025-33121Network attack vector

Sensitive-data disclosure and memory exhaustion via XXE

Published Jun 19, 2025 · Updated Aug 24, 2025

XXE in IBM QRadar SIEM 7.5 through 7.5.0 UP12 IF01 allows remote authenticated users to read sensitive data or consume memory. IBM states that the flaw occurs while processing XML data but has not identified the parser, endpoint, or missing entity restriction. Low-privilege network access is required; successful exploitation exposes data or depletes memory without a reported integrity impact.

CVSS severity7.1
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in IBM QRadar SIEM 7.5 through 7.5.0 UP12 IF01 allows remote authenticated users to read sensitive data or consume memory. IBM states that the flaw occurs while processing XML data but has not identified the parser, endpoint, or missing entity restriction. Low-privilege network access is required; successful exploitation exposes data or depletes memory without a reported integrity impact.

The record

CVE
CVE-2025-33121
Published
Jun 19, 2025
Updated
Aug 24, 2025
Vendor
IBM
Product
QRadar SIEM
Classifications
CWE-611
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 2025Record 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=7.5 <=7.5.0 Update Pack 12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · QRadar SIEMversion=7.5 <=7.5.0 Update Pack 12

Published CVSS scores

7.1IBMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference

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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