CVE-2023-47565
Command Injection in Qnap Qvr Firmware 4.0.0 – 5.0.0
Raw vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-47565 is a high-severity OS Command Injection (CWE-78) vulnerability in Qnap Qvr Firmware. Its CVSS base score is 8.0 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked in the top 0.5% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
An OS command injection vulnerability tracked as CVE-2023-47565 affects legacy QNAP VioStor NVR models running QVR Firmware 4.x. The flaw, assigned CWE-78, permits execution of arbitrary operating-system commands and carries a CVSS 3.1 score of 8.0 reflecting network-adjacent attack vector, low complexity, and low-privileged authenticated access that can fully compromise confidentiality, integrity, and availability.
An authenticated user on the same network segment can supply crafted input to trigger the injection, resulting in arbitrary command execution on the affected NVR appliance. Successful exploitation therefore allows an attacker to run commands with the privileges of the vulnerable process, potentially leading to full device takeover.
QNAP security advisory QSA-23-48 states that the issue has been resolved in QVR Firmware 5.0.0 and later releases; administrators are advised to upgrade affected legacy devices to a supported firmware branch. The vulnerability is also listed in the CISA Known Exploited Vulnerabilities catalog.
The associated EPSS score currently stands at 0.8675 with a recorded peak of 0.8808, indicating sustained exploitation interest after disclosure.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-51676
Vulnerability Data
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…
more
the following versions: QVR Firmware 5.0.0 and later
- CWE(s)
- KEV Date Added
- 21 December 2023
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.2.5V1.2.8
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.
Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.