QNAP VioStor NVR OS Command Injection Vulnerability
An OS command injection vulnerability has been found to affect legacy QNAP VioStor NVR models running QVR Firmware 4.x. If exploited, the vulnerability could allow authenticated users to execute commands via a network. We have already…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 3 / 5
- KEV catalog (CISA)21 Dec 2023
- Exploited in EUVD (ENISA)21 Dec 2023
- Used by ransomwareno
- EPSS above 10 %73.3%
- No account, over the networkno
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
An OS command injection vulnerability has been found to affect legacy QNAP VioStor NVR models running QVR Firmware 4.x. If exploited, the vulnerability could allow authenticated users to execute commands via a network. We have already fixed the vulnerability in the following versions: QVR Firmware 5.0.0 and later
Affected products
- 4.x <5.0.0
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
-
EPSS peak: 73.3%
References
Other exploited vulnerabilities from the same vendor
- CVE-2022-27593QNAP Photo Station Externally Controlled Reference Vulnerability9.6 · Background exploitation
- CVE-2019-7195QNAP Photo Station Path Traversal Vulnerability9.6 · Background exploitation
- CVE-2019-7194QNAP Photo Station Path Traversal Vulnerability9.4 · Background exploitation
- CVE-2019-7193QNAP QTS Improper Input Validation Vulnerability7.4 · Background exploitation
- CVE-2019-7192QNAP Photo Station Improper Access Control Vulnerability9.6 · Background exploitation
- CVE-2018-19953QNAP NAS File Station Cross-Site Scripting Vulnerability6.4 · Background exploitation