CVE-2024-1531Network attack vector

Authenticated memory disclosure via crafted language-file upload

Published Mar 27, 2024 · Updated Aug 5, 2024

Dangerous file upload in Hitachi Energy RTU500 Series CMU Firmware allows remote authenticated users to expose memory through system logs. The STB-language file handler processes a crafted upload so that random memory contents are written into the RTU500 system log. Exploitation requires an authorized upload and affects log confidentiality and integrity, with device availability also exposed to impact.

CVSS severity7.0
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Dangerous file upload in Hitachi Energy RTU500 Series CMU Firmware allows remote authenticated users to expose memory through system logs. The STB-language file handler processes a crafted upload so that random memory contents are written into the RTU500 system log. Exploitation requires an authorized upload and affects log confidentiality and integrity, with device availability also exposed to impact.

The record

CVE
CVE-2024-1531
Published
Mar 27, 2024
Updated
Aug 5, 2024
Vendor
Hitachi Energy
Product
RTU500 Series CMU Firmware
Classifications
CWE-434, CAPEC-551, T1565.001
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=12.0.1 <=12.0.14
  2. Affected versionversion=12.2.1 <=12.2.11
  3. Affected versionversion=12.4.1 <=12.4.11
  4. Affected versionversion=12.6.1 <=12.6.9
  5. Affected versionversion=12.7.1 <=12.7.6
  6. Affected versionversion=13.2.1 <=13.2.6
  7. Affected versionversion=13.4.1 <=13.4.4
  8. Affected versionversion=13.5.1 <=13.5.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Hitachi Energy · RTU500 Series CMU Firmwareversion=12.0.1 <=12.0.14; version=12.2.1 <=12.2.11; version=12.4.1 <=12.4.11; version=12.6.1 <=12.6.9; version=12.7.1 <=12.7.6; version=13.2.1 <=13.2.6; version=13.4.1 <=13.4.4; version=13.5.1 <=13.5.3

Published CVSS scores

7.0CISACVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
8.2CISACVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-551Modify Existing Service
T1565.001Stored Data Manipulation

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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