QTS, QuTS hero, QuTScloud

published 2023-10-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-37194

cvss: 3.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

A buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated administrators to execute code via a network.

We have already fixed the vulnerability in the following versions: QTS 5.0.1.2425 build 20230609 and later QTS 5.1.0.2444 build 20230629 and later QTS 4.5.4.2467 build 20230718 and later QuTS hero h5.0.1.2515 build 20230907 and later QuTS hero h5.1.0.2424 build 20230609 and later QuTS hero h4.5.4.2476 build 20230728 and later QuTScloud c5.1.0.2498 and later

Patch / fix

fixed in 3

QNAP Systems Inc. QTS 4.5.4.2467 build 20230718, 5.0.1.2425 build 20230609, 5.1.0.2444 build 20230629
QNAP Systems Inc. QuTS hero h4.5.4.2476 build 20230728, h5.0.1.2515 build 20230907, h5.1.0.2424 build 20230609
QNAP Systems Inc. QuTScloud c5.1.0.2498

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-09-16)

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

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

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input
CWE-121 Stack-based Buffer Overflow
CWE-787 Out-of-bounds Write

References

qnap.com /en/security-advisory/qsa-23-41
vendor-advisory

Sources

CVE List CVE-2023-32973
NVD CVE-2023-32973

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.

Summary