VulnerabilityPublished 11 Feb 2026

CVE-2024-56807: QNAP Systems Media Streaming add-on · Out-of-bounds Read

Affects QNAP Systems Media Streaming add-onSource CVE Database V5

Not known to be exploited · CVSS 1.7 Low : upgrade to 500.1.1.6 ( 2024/08/02 ) when convenient.

Data as of 26 Oct 2026, 12:54 UTC

CVSS 4.0 base score

1.7Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 500.1.1.6 ( 2024/08/02 )

CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

Base metrics

Attack Vector: Physical
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: High
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: Unreported

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Physical: The attack requires the attacker to physically touch or manipulate the vulnerable system. Physical interaction may be brief (e.g., evil maid attack) or persistent.
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: High: There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the Vulnerable System; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the Vulnerable System (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: Unreported: Based on threat intelligence sources each of the following must apply: · No knowledge of publicly available proof-of-concept · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 11 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade QNAP Systems Media Streaming add-on to 500.1.1.6 ( 2024/08/02 ).

Affected software

Product	Affected	Fixed in
QNAP Systems Inc.Media Streaming add-on	Affected =>=500.1.0 <500.2.0	Fixed in 500.1.1.6 ( 2024/08/02 )

AI-suggested

European organizations should immediately verify if their QNAP NAS devices have the Media Streaming add-on version 500.1.x installed and update to version 500.1.1.6 or later, where the vulnerability is fixed. Network administrators should enforce strict network segmentation to limit local network access only to trusted devices and users, reducing the attack surface. Implementing robust internal access controls and monitoring for unusual network activity can help detect attempts to exploit local vulnerabilities. Disable or uninstall the Media Streaming add-on if it is not required to minimize exposure. Regularly audit device firmware and add-on versions to ensure timely patching. Employ network intrusion detection systems (NIDS) to identify suspicious traffic patterns indicative of exploitation attempts. Educate staff on the risks of local network compromise and enforce strong endpoint security to prevent attackers from gaining initial access. Finally, maintain an inventory of all QNAP devices and their configurations to facilitate rapid response in case of incidents.

Description

CVE-2024-56807 is an out-of-bounds read vulnerability (CWE-125) affecting QNAP Systems Inc. 's Media Streaming add-on version 500.1.x. An attacker with local network access can exploit this flaw to read secret data from the device's memory. The vulnerability does not require authentication or user interaction and has a low CVSS 4.0 score of 1.7, indicating limited impact and difficulty of exploitation. QNAP has released a fixed version 500.1.

Impact

For European organizations, the primary impact of CVE-2024-56807 is the potential unauthorized disclosure of sensitive data stored on QNAP NAS devices running the vulnerable Media Streaming add-on. Since exploitation requires local network access, organizations with weak internal network segmentation or insufficient access controls are at higher risk. The confidentiality of stored media or other data could be compromised, potentially leading to data leakage incidents. Although the vulnerability does not allow remote exploitation or privilege escalation, attackers who gain foothold in the local network—via phishing, compromised devices, or insider threats—could leverage this flaw to extract secret information. This could affect sectors with high data sensitivity such as finance, healthcare, and government agencies. The low CVSS score and lack of known exploits reduce the immediate threat level, but the widespread use of QNAP devices in European SMBs and enterprises means that unpatched systems remain vulnerable. Additionally, the vulnerability may be leveraged as part of a multi-stage attack chain, increasing its potential impact.

CWE-125Out-of-bounds Read (opens in a new tab)
Base weaknessCWE Top 25 (2025): #8
The product reads data past the end, or before the beginning, of the intended buffer.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
Architecture and Design · Language Selection
Use a language that provides appropriate memory abstractions.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
Attack patterns
Overread Buffers (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

qnap.com/en/security-advisory/qsa-25-57 (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Feb 2026, 15:21 UTC

WeaknessesCWE-125

Technical details

References

Community reviews

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