CVE-2021-40335Network attack vector

Unauthorized commands via unverified cross-site requests

Published Jul 25, 2022 · Updated Sep 16, 2024

CSRF in Hitachi Energy Modular Switchgear Monitoring 2.2 and earlier allows remote attackers to perform unauthorized web actions. The HTTP interface accepts a well-formed request without verifying that the authenticated user intentionally submitted it. Exploitation requires an MSM user with an active session to open an attacker-supplied link, after which the interface executes commands as that user.

CVSS severity5.0
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in Hitachi Energy Modular Switchgear Monitoring 2.2 and earlier allows remote attackers to perform unauthorized web actions. The HTTP interface accepts a well-formed request without verifying that the authenticated user intentionally submitted it. Exploitation requires an MSM user with an active session to open an attacker-supplied link, after which the interface executes commands as that user.

The record

CVE
CVE-2021-40335
Published
Jul 25, 2022
Updated
Sep 16, 2024
Vendor
Hitachi Energy
Product
Modular Switchgear Monitoring
Classifications
CWE-352, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v2.2 <=V2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hitachi Energy · Modular Switchgear Monitoringversion=v2.2 <=V2.2

Published CVSS scores

5.0Hitachi EnergyCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1566.002Spearphishing Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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