CVE-2024-50396Network attack vector

Secret disclosure or memory modification via format strings

Published Nov 22, 2024 · Updated Nov 22, 2024

Externally controlled format strings in QNAP QTS and QuTS hero 5.2.x allow remote attackers to disclose secrets or modify memory. QNAP has not disclosed the affected component, input vector, or formatting call that consumes attacker-controlled data. Exploitation requires a target-specific precondition and passive user interaction; successful attacks can read secret data or corrupt process memory.

CVSS severity7.7
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Externally controlled format strings in QNAP QTS and QuTS hero 5.2.x allow remote attackers to disclose secrets or modify memory. QNAP has not disclosed the affected component, input vector, or formatting call that consumes attacker-controlled data. Exploitation requires a target-specific precondition and passive user interaction; successful attacks can read secret data or corrupt process memory.

The record

CVE
CVE-2024-50396
Published
Nov 22, 2024
Updated
Nov 22, 2024
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-134, CAPEC-135
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 22, 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=h5.2.x <h5.2.1.2929 build 20241025

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Linn Products Limited · QuTS heroversion=h5.2.x <h5.2.1.2929 build 20241025
Linn Products Limited · QTSversion=? <5.2.1.2930 build 20241025

Published CVSS scores

7.7QNAP Systems, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-134Use of Externally-Controlled Format String
CAPEC-135Format String Injection

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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