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CVE-2021-40339

19
FAUCET Score

CVE-2021-40339 is a configuration vulnerability in Hitachi Energy LinkOne versions 3.20 through 3.26, stemming from a lack of HTTP security headers. This allows an unauthenticated attacker to remotely retrieve sensitive information with low attack complexity. While rated as High severity (CVSS 7.5), there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.20CPE matchmatch criteria
cpe:2.3:a:hitachi:linkone:3.20:*:*:*:*:*:*:*
3.22CPE matchmatch criteria
cpe:2.3:a:hitachi:linkone:3.22:*:*:*:*:*:*:*
3.23CPE matchmatch criteria
cpe:2.3:a:hitachi:linkone:3.23:*:*:*:*:*:*:*
3.24CPE matchmatch criteria
cpe:2.3:a:hitachi:linkone:3.24:*:*:*:*:*:*:*
3.25CPE matchmatch criteria
cpe:2.3:a:hitachi:linkone:3.25:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.73%
Probability of exploitation in next 30 days
EPSS Percentile
50.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0073 is in the 26th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

search.abb.com / library/Download.aspx
Vendor Advisory