Page generated: 09 Nov 2026, 07:34 UTC
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CVE-2021-20123

A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with…

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A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.
CVSS 7.5 (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 7.5: +1.12
  • Fresh EPSS: 89.65%: +0.45

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

Cybersecurity Dive
Press · 26 Mar 2025, 07:00 · DrayTek routers face active exploitation of older vulnerabilities - Cybersecurity Dive
Cyber Daily
Press · 26 Mar 2025, 07:00 · Active exploitation of DrayTek router vulnerabilities underway in the wild - Cyber Daily
GreyNoise
Press · 25 Mar 2025, 07:00 · Amid Reports of Worldwide Reboots, GreyNoise Observes In-the-Wild Activity Against DrayTek Routers - GreyNoise
SecurityWeek
Press · 25 Mar 2025, 07:00 · Vulnerability Exploitation Possibly Behind Widespread DrayTek Router Reboots - SecurityWeek
ISPreview UK
Press · 03 Oct 2024, 07:00 · Serious Security Vulnerabilities Exposed in 704,525 DrayTek Routers UPDATE - ISPreview UK
See all 6 source documents
The Hacker News
Press · 06 Sep 2024, 07:00 · GeoServer Vulnerability Targeted by Hackers to Deliver Backdoors and Botnet Malware - 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 15:12). 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 7.5; EPSS 89.7%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior 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 13:58:22.744333+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
13 Oct 2021, 15:47
Added to the CISA KEV catalog
03 Sep 2024, 00:00
First press mention
06 Sep 2024, 07:00
Latest press mention
26 Mar 2025, 07:00
Score calculated
05 Nov 2026, 13:58