CVE-2026-93441: IBM QRadar SIEM HTTP Receiver protocol is vulnerable to a denial of service

Q: Does exploitation require authentication or user interaction?

No. The supplied CVSS vector indicates that the issue is network-accessible and requires neither privileges nor user interaction.

Q: Does the available information indicate data disclosure or modification?

No. The supplied CVSS vector assigns no confidentiality or integrity impact, while availability impact is rated high.

Published Oct 13, 2026

Updated

IBM QRadar could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption.

Other sources

IBM QRadar SIEM could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption.

— MITRE

Affected Software

2 affected components

IBM QRadar SIEM<=7.4-20210823144546 - 7.5-20260930064858

IBM QRadar SIEM<=7.6-20260330053257 - 7.6-20260930064910

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade IBM QRadar SIEM HTTP Receiver 7.5 to a version that resolves this vulnerability.
Patch PROTOCOL-HTTPReceiver-7.5-20260930064859.noarch.rpm
Upgrade
Upgrade IBM QRadar SIEM HTTP Receiver 7.6 to a version that resolves this vulnerability.
Patch PROTOCOL-HTTPReceiver-7.6-20260930064911.noarch.rpm

Event History

Oct 13, 2026

CVE Published

via IBM·12:00 AM

Data Sourced

via IBM·12:00 AM

DescriptionAffected Software

Oct 20, 2026

CVE Published

via MITRE·09:51 PM

Data Sourced

via MITRE·09:51 PM

RemedyDescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

IBM-7292244

Frequently Asked Questions

Does exploitation require authentication or user interaction?

No. The supplied CVSS vector indicates that the issue is network-accessible and requires neither privileges nor user interaction.

Does the available information indicate data disclosure or modification?

No. The supplied CVSS vector assigns no confidentiality or integrity impact, while availability impact is rated high.

CVE-2026-93441: IBM QRadar SIEM HTTP Receiver protocol is vulnerable to a denial of service

Other sources

Affected Software

Remediation

Event History

Parent advisories

Frequently Asked Questions

Does exploitation require authentication or user interaction?

Does the available information indicate data disclosure or modification?

Company

Resources

Contact

Frequently Asked Questions

Does exploitation require authentication or user interaction?

Does the available information indicate data disclosure or modification?