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CVE-2021-38406

92
FAUCET Score

CVE-2021-38406 is a critical out-of-bounds write vulnerability affecting Delta Electronic DOPSoft 2 (versions 2.00.07 and prior) due to improper validation of user-supplied project file data. This flaw carries a CVSS score of 7.8 (High) and could allow an unauthenticated attacker, through user interaction, to achieve arbitrary code execution with high impact on confidentiality, integrity, and availability. The vulnerability is actively exploited, as confirmed by its presence in CISA's KEV catalog, and has garnered significant community discussion and media coverage, despite a lack of public exploit code.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.00, <= 2.00.07CPE matchmatch criteria
cpe:2.3:a:deltaww:dopsoft:*:*:*:*:*:*:*:*

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
77.89%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Aug 25, 2022
This CVE's current EPSS score of 0.7789 is in the 100th 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

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

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
us-cert.cisa.gov / ics/advisories/icsa-21-252-02
Third Party AdvisoryUS Government Resource