How severe is CVE-2021-40337?

CVE-2021-40337 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-40337 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40337?

CVE-2021-40337 primarily affects Hitachi Linkone. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-40337?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-40337 published?

CVE-2021-40337 was published on 2022-01-25 and last updated on 2026-06-17.

CVE-2021-40337

CVE-2021-40337 is a medium-severity vulnerability in Hitachi Linkone with a CVSS 3.x base score of 4.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.2)
CVSS v2: 3.5
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Hitachi Linkone
Published: 2022-01-25
Last modified: 2026-06-17

Description

Cross-site Scripting (XSS) vulnerability in Hitachi Energy LinkOne allows an attacker that manages to exploit the vulnerability can take advantage to exploit multiple web attacks and stole sensitive information. This issue affects: Hitachi Energy LinkOne 3.20; 3.22; 3.23; 3.24; 3.25; 3.26.

Frequently asked questions

What is CVE-2021-40337?: Cross-site Scripting (XSS) vulnerability in Hitachi Energy LinkOne allows an attacker that manages to exploit the vulnerability can take advantage to exploit multiple web attacks and stole sensitive information. This issue affects: Hitachi Energy LinkOne 3.20; 3.22; 3.23; 3.24; 3.25; 3.26.
How severe is CVE-2021-40337?: CVE-2021-40337 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-40337 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40337?: CVE-2021-40337 primarily affects Hitachi Linkone. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-40337?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40337 published?: CVE-2021-40337 was published on 2022-01-25 and last updated on 2026-06-17.

References

https://search.abb.com/library/Download.aspx?DocumentID=8DBD000079&LanguageCode=en&DocumentPartId=&Action=Launch

Affected products (6)

cpe:2.3:a:hitachi:linkone:3.20:*:*:*:*:*:*:*
cpe:2.3:a:hitachi:linkone:3.22:*:*:*:*:*:*:*
cpe:2.3:a:hitachi:linkone:3.23:*:*:*:*:*:*:*
cpe:2.3:a:hitachi:linkone:3.24:*:*:*:*:*:*:*
cpe:2.3:a:hitachi:linkone:3.25:*:*:*:*:*:*:*
cpe:2.3:a:hitachi:linkone:3.26:*:*:*:*:*:*:*

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