High · CVSS 8.6CVE-2026-93441

IBM QRadar SIEM HTTP Receiver protocol is vulnerable to a denial of serviceCVE-2026-93441

Answer in brief

CVE-2026-93441 records a High severity (CVSS 8.6) vulnerability in IBM QRadar SIEM HTTP Receiver protocol is vulnerable to a denial of service. The current sources do not mark it as known exploited. The current feed maps IBM/QRadar Security Information and Event Management (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 20, 2026Updated Oct 20, 2026Source checked Oct 20, 2026First seen by HOL Oct 20, 2026Material review Oct 20, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.6
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps IBM/QRadar Security Information and Event Management (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
IBM/QRadar Security Information and Event Managementgeneric	>=7.4-20210823144546 <=7.5-20260930064858 \|\| >=7.6-20260330053257 <=7.6-20260930064910	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for IBM/QRadar Security Information and Event Management.
Review the reported fix. Source-reported solution: IBM strongly encourages customers to update their systems promptly. ProductProtocolVersionFixIBM QRadar SIEMHTTP Receiver 7.5 PROTOCOL-HTTPReceiver-7.5-20260930064859.noarch.rpm https://www.ibm.com/support/fixcentral/swg/selectFixes IBM QRadar SIEMHTTP Receiver 7.6 PROTOCOL-HTTPReceiver-7.6-20260930064911.noarch.rpm https://www.ibm.com/support/fixcentral/swg/selectFixes These RPMs will be updated as part of QRadar Auto Update https://www.ibm.com/docs/en/qsip/7.6.0 where enabled.

Evidence timeline and material changes

Published upstream
Oct 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 20, 2026

Sources and claim methodology

Source referenceibm.com

Upstream source description

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

Quoted source text, attributed separately from HOL analysis.