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6.5

QNAP OS versions open to denial-of-service attacks via network

CVE-2023-51368 · published 2 years ago
Summary

Several QNAP operating system versions are vulnerable to a bug that could cause a denial-of-service attack. This means an attacker could stop users from accessing certain services on the system. QNAP has released updates to fix the issue in certain versions, so it's essential to ensure you're running one of the patched versions to stay secure.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
qnap qts 5.1.0.2348
5.1.0.2399
5.1.0.2418
5.1.0.2444
5.1.0.2466
5.1.1.2491
5.1.2.2533
5.1.3.2578
5.1.4.2596
5.1.5.2645
5.1.5.2679
cpe:2.3:o:qnap:qts:5.1.0.2348:build_20230325:*:*:*:*:*:*
qnap quts_hero h5.1.0.2409
h5.1.0.2424
h5.1.0.2453
h5.1.0.2466
h5.1.1.2488
h5.1.2.2534
h5.1.3.2578
h5.1.4.2596
h5.1.5.2647
h5.1.5.2680
cpe:2.3:o:qnap:quts_hero:h5.1.0.2409:build_20230525:*:*:*:*:*:*
Original advisory text
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to launch a denial-of-service (DoS) at...
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to launch a denial-of-service (DoS) attack via a network.

We have already fixed the vulnerability in the following versions:
QTS 5.1.6.2722 build 20240402 and later
QuTS hero h5.1.6.2734 build 20240414 and later
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
6.5 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-476NULL Pointer Dereference
Timeline
Published6 Sep 2024
Updated31 Oct 2026
First seen7 Mar 2026
Sources
CVE-2023-51368 · NVD
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