CVE-2024-53693Network attack vector

Application-data modification via CRLF injection

Published Mar 7, 2025 · Updated Mar 7, 2025

CRLF injection in QNAP QTS 5.2.x and QuTS hero h5.2.x allows remote authenticated users to modify application data. QNAP has not disclosed the affected component or the operation that fails to neutralize attacker-supplied CRLF sequences before using them. Valid NAS user access is required, and public records do not identify the modified data or disclose the resulting application operation.

CVSS severity7.1
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CRLF injection in QNAP QTS 5.2.x and QuTS hero h5.2.x allows remote authenticated users to modify application data. QNAP has not disclosed the affected component or the operation that fails to neutralize attacker-supplied CRLF sequences before using them. Valid NAS user access is required, and public records do not identify the modified data or disclose the resulting application operation.

The record

CVE
CVE-2024-53693
Published
Mar 7, 2025
Updated
Mar 7, 2025
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-94, CWE-93, CWE-400
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 7, 2025Record 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=h5.2.x <h5.2.3.3006 build 20250108

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linn Products Limited · QuTS heroversion=h5.2.x <h5.2.3.3006 build 20250108
Linn Products Limited · QTSversion=5.2.x <5.2.3.3006 build 20250108

Published CVSS scores

7.1QNAP Systems, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

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-94Improper Control of Generation of Code ('Code Injection')
CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')
CWE-400Uncontrolled Resource Consumption

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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