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Fencer Vulns
medium 5.5

CVE-2023-45026 json

QTS, QuTS hero, QuTScloud

published 2024-02-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-49347

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

A path traversal vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated administrators to read the contents of unexpected files and expose sensitive data via a network.

We have already fixed the vulnerability in the following versions: QTS 5.1.5.2645 build 20240116 and later QuTS hero h5.1.5.2647 build 20240118 and later QuTScloud c5.1.5.2651 and later

Patch / fix

  • QNAP Systems Inc. QTS 5.1.5.2645 build 20240116
  • QNAP Systems Inc. QuTS hero h5.1.5.2647 build 20240118
  • QNAP Systems Inc. QuTScloud c5.1.5.2651

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L
NVD 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected products

  • QNAP Systems Inc. QTS
  • QNAP Systems Inc. QuTS hero
  • QNAP Systems Inc. QuTScloud

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.