7.2

CVE-2023-45036: qnap systems inc. qts Classic Buffer Overflow

CVSS: 7.2v3.1HighModified
Published 02-02-2024Last modified 17-06-2025
Open JSON

Vulnerability summary

CVE-2023-45036 is a high (CVSS 7.2) Classic Buffer Overflow vulnerability in qnap systems inc. qts. EPSS estimates a 0.58% chance of exploitation in the next 30 days, higher than 46.7% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.2/10
010
High · v3.1 (NVD)
EPSS score
0.58%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 02-02-2024
    PublishedVulnerability first disclosed.
  2. 17-06-2025
    Last modifiedVulnerability information updated.

Description

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 5.1.3.2578 build 20231110 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTScloud c5.1.5.2651 and later

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.58%

Chance of exploitation in the next 30 days

Percentile

47%

Versus all other CVEs

30-day change

0.00 pp

From 0.58% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.58%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Qnap3 products
  • qts5.1.0.2348:build_20230325 | 5.1.0.2399:build_20230515 | 5.1.0.2418:build_20230603 | 5.1.0.2444:build_20230629 | 5.1.0.2466:build_20230721 | 5.1.1.2491:build_20230815 | 5.1.2.2533:build_20230926 | 5.1.3.2578
  • quts_heroh5.1.0.2409:build_20230525 | h5.1.0.2424:build_20230609 | h5.1.0.2453:build_20230708 | h5.1.0.2466:build_20230721 | h5.1.1.2488:build_20230812 | h5.1.2.2534:build_20230927 | h5.1.3.2578
  • qutscloudc5.1.0.2498:build_20230822
Qnap systems inc.3 products
  • qts≥ 5.1.x, < 5.1.3.2578 build 20231110
  • quts hero≥ h5.1.x, < h5.1.3.2578 build 20231110
  • qutscloud≥ c5.x.x, < c5.1.5.2651

2 vendors · 6 products

References

1 links