CVE-2023-32967Network attack vector

Authenticated bypass of intended access restrictions

Published Feb 2, 2024 · Updated Aug 2, 2024

Incorrect authorization in QNAP QTS 4.5.x and QuTScloud c5.x allows remote authenticated users to bypass access restrictions. QNAP has not published the affected request handler, protected resource, or authorization check that accepts the disallowed operation. Existing user access and network reachability are required, and the disclosed consequence is access beyond the user's intended restrictions.

CVSS severity5.0
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in QNAP QTS 4.5.x and QuTScloud c5.x allows remote authenticated users to bypass access restrictions. QNAP has not published the affected request handler, protected resource, or authorization check that accepts the disallowed operation. Existing user access and network reachability are required, and the disclosed consequence is access beyond the user's intended restrictions.

The record

CVE
CVE-2023-32967
Published
Feb 2, 2024
Updated
Aug 2, 2024
Vendor
Linn Products Limited
Product
QuTScloud
Classifications
CWE-285, CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=c5.x.x <c5.1.5.2651

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linn Products Limited · QuTScloudversion=c5.x.x <c5.1.5.2651
Linn Products Limited · QTSversion=4.5.x <4.5.4.2627 build 20231225

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
5.0QNAP Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
CWE-863Incorrect Authorization

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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