CVE-2021-40335

CVE-2021-40335 is a medium-severity vulnerability in Hitachienergy Modular Switchgear Monitoring Firmware with a CVSS 3.x base score of 5.0. 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-352.

Key facts

Description

A vulnerability exists in the HTTP web interface where the web interface does not sufficiently verify if a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. This cause a Cross Site Request Forgery (CSRF), which if exploited could lead an attacker to gain unauthorized access to the web application and perform an unwanted operation on it without the knowledge of the legitimate user. An attacker, who successfully makes an MSM user who has already established a session to MSM web interface clicks a forged link to the MSM web interface, e.g., link is sent per E-Mail, could perform harmful command on MSM through its web server interface. This issue affects: Hitachi Energy MSM V2.2 and prior versions.

Frequently asked questions

What is CVE-2021-40335?
A vulnerability exists in the HTTP web interface where the web interface does not sufficiently verify if a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. This cause a Cross Site Request Forgery (CSRF), which if exploited could lead an attacker to gain unauthorized access to the web application and perform an unwanted operation on it without the knowledge of the legitimate user. An attacker, who successfully makes an MSM user who has already established a session to MSM web interface clicks a forged link to the MSM web interface, e.g., link is sent per E-Mail, could perform harmful command on MSM through its web server interface. This issue affects: Hitachi Energy MSM V2.2 and prior versions.
How severe is CVE-2021-40335?
CVE-2021-40335 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2021-40335 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40335?
CVE-2021-40335 affects Hitachienergy Modular Switchgear Monitoring Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40335?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40335 published?
CVE-2021-40335 was published on 2022-07-25 and last updated on 2026-06-17.

References

Affected products (1)

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