Page generated: 09 Nov 2026, 08:46 UTC
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CVE-2023-47565

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 vers…

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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
CVSS 8.0 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.6/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 8: +1.20
  • Fresh EPSS: 73.28%: +0.37

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 6 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

BleepingComputer
Press · 09 Oct 2025, 07:00 · RondoDox botnet targets 56 n-day flaws in worldwide attacks - BleepingComputer
SecurityWeek
Press · 22 Dec 2023, 08:00 · CISA Warns of FXC Router, QNAP NVR Vulnerabilities Exploited in the Wild - SecurityWeek
CISO Series
Press · 18 Dec 2023, 08:00 · Cybersecurity News: Box suffers outage, MongoDB suffers breach, States lag in tackling political deepfakes - CISO Series
BleepingComputer
Press · 16 Dec 2023, 08:00 · QNAP VioStor NVR vulnerability actively exploited by malware botnet - BleepingComputer
Akamai
Press · 14 Dec 2023, 08:00 · Actively Exploited Vulnerability in QNAP VioStor NVR: Fixed, Patches Available - Akamai
See all 6 source documents
The Hacker News
Press · 23 Nov 2023, 08:00 · Mirai-based Botnet Exploiting Zero-Day Bugs in Routers and NVRs for Massive DDoS Attacks - The Hacker News

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.6 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 8; EPSS 73.3%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
adjacent access, low privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:59:00.365953+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
23 Nov 2023, 08:00
Published
08 Dec 2023, 16:06
Added to the CISA KEV catalog
21 Dec 2023, 00:00
Latest press mention
09 Oct 2025, 07:00
Score calculated
05 Nov 2026, 13:59