Answer in brief
CVE-2026-41539 records a Medium severity (CVSS 6.1) vulnerability in QTS, QuTS hero. The current sources do not mark it as known exploited. The current feed maps QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QuTS hero (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.1. 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.
The current feed maps QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QuTS hero (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| QNAP Systems Inc./QTSgeneric | >=5.2.0 <5.2.9.3492 build 20260507 | 5.2.9.3492 build 20260507 |
| QNAP Systems Inc./QuTS herogeneric | >=h5.2.0 <h5.2.9.3499 build 20260514 || >=h5.3.0 <h5.3.4.3500 build 20260520 || >=? <h6.0.0.3500 build 20260520 | h5.2.9.3499 build 20260514, h5.3.4.3500 build 20260520, h6.0.0.3500 build 20260520 |
Published upstream
Jun 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 30, 2026
A cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to bypass security mechanisms or read application data. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3492 build 20260507 and later QuTS hero h5.2.9.3499 build 20260514 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3500 build 20260520 and later
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-41539 records a Medium severity (CVSS 6.1) vulnerability in QTS, QuTS hero. The current sources do not mark it as known exploited. The current feed maps QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QuTS hero (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.1. 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.
The current feed maps QNAP Systems Inc./QTS (generic), QNAP Systems Inc./QuTS hero (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| QNAP Systems Inc./QTSgeneric | >=5.2.0 <5.2.9.3492 build 20260507 | 5.2.9.3492 build 20260507 |
| QNAP Systems Inc./QuTS herogeneric | >=h5.2.0 <h5.2.9.3499 build 20260514 || >=h5.3.0 <h5.3.4.3500 build 20260520 || >=? <h6.0.0.3500 build 20260520 | h5.2.9.3499 build 20260514, h5.3.4.3500 build 20260520, h6.0.0.3500 build 20260520 |
Published upstream
Jun 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 30, 2026
A cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to bypass security mechanisms or read application data. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3492 build 20260507 and later QuTS hero h5.2.9.3499 build 20260514 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3500 build 20260520 and later
Quoted source text, attributed separately from HOL analysis.