What is CVE-2026-44083?

CVE-2026-44083 is a critical-severity vulnerability in QNAP Qumagie, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2026-06-09.

How severe is CVE-2026-44083?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in QNAP Qumagie

CVE-2026-44083

An authorization bypass through user-controlled key vulnerability has been reported to affect QuMagie. The remote attackers can then exploit the vulnerability to gain unintended privileges. We have already fixed the vulnerability in the following version: QuMagie 2.9.1 and later

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-06-09 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.002

Affected products

QNAP Qumagie
QNAP Systems Inc. Qumagie — versions 2.9.0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

www.qnap.com/en/security-advisory/qsa-26-35 (Broken Link)

Frequently asked questions

What is CVE-2026-44083?: CVE-2026-44083 is a critical-severity vulnerability in QNAP Qumagie, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2026-06-09.
How severe is CVE-2026-44083?: Critical severity. CVSS v3 base score is 9.8 out of 10.