CVE-2024-21899QTS Authentication Bypass
An improper authentication vulnerability has been reported to affect several QNAP operating system versions.
Published Mar 11, 2024 · Updated Aug 1, 2024
Key Facts
Patch immediately- CVE-2024-21899 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting QTS (Qnap), QuTScloud (Qnap), QuTS hero (Qnap).
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Mar 18, 2024. No public exploit code is known.
- EPSS estimates a 24% probability of exploitation in the next 30 days.
- Fixed versions are available, including QTS 4.5.4.2627, QTS 4.5.4.2627 build 20231225, QTS 5.1.3.2578 build 20231110.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
24%
Higher than 97.8% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
53/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Mar 18, 2024
7 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
10
Reports of active use
Advisories And Exploit References
Description
An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.
We have already fixed the vulnerability in the following versions: QTS 5.1.3.2578 build 20231110 and later QTS 4.5.4.2627 build 20231225 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTS hero h4.5.4.2626 build 20231225 and later QuTScloud c5.1.5.2651 and later
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Mar 18, 2024 | n/a | Not reported |
| Industry KEV feed | Mar 18, 2024 | n/a | Not reported |
Affected Products
10 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| QTSQnap | 4.5.4.2627, 5.1.3.2578, >= 5.1.x | 4.5.4.2627 |
| QuTScloudQnap | >= c5.x.x | c5.1.5.2651 |
| QuTS heroQnap | h4.5.4.2626, h5.1.3.2578, >= h5.1.x | h4.5.4.2626 |
Patched Releases
QTS
4.5.4.2627, 4.5.4.2627 build 20231225, 5.1.3.2578 build 20231110
QuTS hero
h4.5.4.2626, h4.5.4.2626 build 20231225, h5.1.3.2578 build 20231110
QuTScloud
c5.1.5.2651
Timeline
Publicly disclosed
Mar 11, 2024
Added to CIRCL KEV
Mar 18, 2024
Added to Industry KEV feed
Mar 18, 2024
Last updated
Aug 1, 2024
Weakness Type
- CWE-287 Improper Authentication
References
- advisoryqnap.com · qsa-24-09
- advisoryqnap.com · qsa-24-12
- advisoryUSOM advisory
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
An improper authentication vulnerability has been reported to affect several QNAP operating system versions.
Affected: QTS (Qnap) versions 4.5.4.2627, 5.1.3.2578, >= 5.1.x; QuTScloud (Qnap) versions >= c5.x.x; QuTS hero (Qnap) versions h4.5.4.2626, h5.1.3.2578, >= h5.1.x. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Mar 18, 2024.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including QTS 4.5.4.2627, QTS 4.5.4.2627 build 20231225, QTS 5.1.3.2578 build 20231110.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2024-21899 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo