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CVE-2021-38412

29
FAUCET Score

CVE-2021-38412 is a critical authentication bypass vulnerability affecting Digi PortServer TS 16 Rack devices. Unauthenticated POST requests to the device's web servers allow an attacker to enable and manipulate SNMP settings, potentially leading to full system compromise. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with low complexity and no user interaction, resulting in high impact to confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the high FAUCET Risk Score of 77/100 indicates significant potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
82000684CPE matchmatch criteria
cpe:2.3:o:digi:portserver_ts_16_firmware:82000684:*:*:*:*:*:*:*
82000685CPE matchmatch criteria
cpe:2.3:o:digi:portserver_ts_16_firmware:82000685:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.34%
Probability of exploitation in next 30 days
EPSS Percentile
68.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0134 is in the 55th percentile among its peer group of 36,897 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-21-257-01
Third Party AdvisoryUS Government Resource