CVE-2019-7193
Published: 05 December 2019
Summary
CVE-2019-7193 is a critical-severity Improper Input Validation (CWE-20) vulnerability in Qnap Qts. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 3.6% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
This improper input validation vulnerability, tracked as CVE-2019-7193 and assigned CWE-20, affects QNAP QTS and Photo Station. It carries a CVSS 3.1 base score of 9.8 and permits remote injection of arbitrary code into the system.
Unauthenticated attackers can exploit the flaw over the network to achieve remote code execution with full impact on confidentiality, integrity, and availability. Public proof-of-concept code targeting QNAP QTS and Photo Station 6.0.3 has been published, confirming the attack path requires no user interaction or credentials.
QNAP's security advisory NAS-201911-25 directs users to update QTS to the latest available versions as the primary mitigation. The vulnerability is also catalogued by CISA among actively exploited issues, indicating confirmed real-world exploitation.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2019-16737
Vulnerability details
This improper input validation vulnerability allows remote attackers to inject arbitrary code to the system. To fix the vulnerability, QNAP recommend updating QTS to their latest versions.
- CWE(s)
- KEV Date Added
- 08 June 2022
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation of all inputs, which would block the arbitrary code injection that defines CWE-20 in CVE-2019-7193.
Mandates timely application of vendor patches, exactly matching QNAP's required update to eliminate the remotely exploitable flaw.
Enables continuous monitoring to identify anomalous network behavior or exploitation attempts against the unauthenticated RCE vector.