CVE-2024-32763Network attack vector

Authenticated code execution via unchecked buffer copy

Published Sep 6, 2024 · Updated Sep 6, 2024

A buffer overflow in QNAP QTS 5.1.x and QuTS hero h5.1.x allows remote authenticated users to execute code via network requests. The vendor identifies an unchecked copy of attacker-controlled input but has not disclosed the affected component, function, or request format. User-level access is required, and successful exploitation permits code execution with consequences for stored data and NAS availability.

CVSS severity8.8
High
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A buffer overflow in QNAP QTS 5.1.x and QuTS hero h5.1.x allows remote authenticated users to execute code via network requests. The vendor identifies an unchecked copy of attacker-controlled input but has not disclosed the affected component, function, or request format. User-level access is required, and successful exploitation permits code execution with consequences for stored data and NAS availability.

The record

CVE
CVE-2024-32763
Published
Sep 6, 2024
Updated
Sep 6, 2024
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-122, CWE-120
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 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=h5.1.x <h5.1.8.2823 build 20240712

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linn Products Limited · QuTS heroversion=h5.1.x <h5.1.8.2823 build 20240712
Linn Products Limited · QTSversion=5.1.x <5.1.8.2823 build 20240712

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.3QNAP Systems, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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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