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CVE-2021-41578

28
FAUCET Score

CVE-2021-41578 is a directory traversal vulnerability in mySCADA myDESIGNER versions 8.20.0 and below. An attacker can exploit this by tricking a user into importing a specially crafted malicious project file (.mep), allowing arbitrary file writes to the operating system. This vulnerability carries a high CVSS score of 7.8 due to its local attack vector, low complexity, and high impact on confidentiality, integrity, and availability, typically leading to code execution. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.20.0CPE matchmatch criteria
cpe:2.3:a:myscada:mydesigner:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
10.78%
Probability of exploitation in next 30 days
EPSS Percentile
95.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1078 is in the 95th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 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 / jacob-baines/vuln_disclosure/blob/main/vuln_2021_05.txt
Third Party Advisory