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CVE-2021-40903

33
FAUCET Score

CVE-2021-40903 is a critical vulnerability affecting Antminer Monitor 0.50.0, stemming from a static, predefined secret string within a settings file in its Flask server. This flaw allows unauthenticated attackers to remotely execute arbitrary code, compromise data confidentiality and integrity, and disrupt system availability with low attack complexity. While the vulnerability carries a CVSS score of 9.8 (Critical) and a high FAUCET Risk Score of 90/100, there is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
0.50.0CPE matchmatch criteria
cpe:2.3:a:antminer_monitor_project:antminer_monitor:0.50.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.50%
Probability of exploitation in next 30 days
EPSS Percentile
90.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0450 is in the 84th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / anselal/antminer-monitor
Product
packetstormsecurity.com / files/164048/Antminer-Monitor-0.5.0-Authentication-Bypass.html
ExploitThird Party AdvisoryVDB Entry
exploit-db.com / exploits/50267
ExploitThird Party AdvisoryVDB Entry