CVE-2023-32973Network attack vector

Authenticated code execution via unchecked buffer copy

Published Oct 13, 2023 · Updated Sep 16, 2024

A buffer copy vulnerability in QNAP QTS, QuTS hero, and QuTScloud allows remote authenticated users to execute code via network requests. The advisory identifies a buffer copy that fails to check input size, but does not name the affected function or request field. Authenticated administrator access is required, and successful exploitation can execute attacker-controlled code on the NAS operating system.

CVSS severity3.8
Low
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A buffer copy vulnerability in QNAP QTS, QuTS hero, and QuTScloud allows remote authenticated users to execute code via network requests. The advisory identifies a buffer copy that fails to check input size, but does not name the affected function or request field. Authenticated administrator access is required, and successful exploitation can execute attacker-controlled code on the NAS operating system.

The record

CVE
CVE-2023-32973
Published
Oct 13, 2023
Updated
Sep 16, 2024
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CAPEC-100, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=h4.5.x <h4.5.4.2476 build 20230728
  2. Affected versionversion=h5.0.x <h5.0.1.2515 build 20230907
  3. Affected versionversion=h5.1.x <h5.1.0.2424 build 20230609

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Linn Products Limited · QuTS heroversion=h4.5.x <h4.5.4.2476 build 20230728; version=h5.0.x <h5.0.1.2515 build 20230907; version=h5.1.x <h5.1.0.2424 build 20230609
Linn Products Limited · QuTScloudversion=c5.x <c5.1.0.2498
Linn Products Limited · QTSversion=4.5.x <4.5.4.2467 build 20230718; version=5.0.x <5.0.1.2425 build 20230609; version=5.1.x <5.1.0.2444 build 20230629

Published CVSS scores

3.8CVE CNACVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CAPEC-100Overflow Buffers
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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