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CVE-2021-38432

29
FAUCET Score

CVE-2021-38432 is a critical stack-based buffer overflow vulnerability affecting FATEK Automation Communication Server versions 1.13 and prior. This flaw, rated 9.8 CVSS, allows an unauthenticated attacker to remotely execute arbitrary code due to insufficient validation of user-supplied data. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE. Organizations utilizing affected FATEK Communication Server products should prioritize patching to mitigate this remote code execution risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.13CPE matchmatch criteria
cpe:2.3:o:fatek:communication_server_firmware:*:*:*:*:*:*:*:*

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
1.76%
Probability of exploitation in next 30 days
EPSS Percentile
75.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0176 is in the 64th percentile among its peer group of 36,862 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

us-cert.cisa.gov / ics/advisories/icsa-21-280-07
Third Party AdvisoryUS Government Resource