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CVE-2023-5767· NVD / CVE Program· CNA Hitachi Energy

A vulnerability exists in the webserver that affects the RTU500 series product versions listed below.

A vulnerability exists in the webserver that affects the RTU500 series product versions listed below. A malicious actor could perform cross-site scripting on the webserver due to an RDT language file being improperly sanitized.

MediumCVSS 6.1 · v3.1—No exploit No fix recorded
Published
Dec 4, 2023
Updated
Jun 17, 2026
EPSS
0.4% · 31th percentile
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Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CNA vs NVD score

NVD
6.1
CNA · Hitachi Energy
6.0
0.1 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
hitachienergyrtu520 firmware
hitachienergyrtu520
hitachienergyrtu530 firmware
hitachienergyrtu530
hitachienergyrtu540 firmware
hitachienergyrtu540
hitachienergyrtu560 firmware
hitachienergyrtu560

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • hitachienergy rtu520 firmware12.0.1 and later · up to 12.0.14 inclusive
  • hitachienergy rtu520 firmware12.2.1 and later · up to 12.2.11 inclusive
  • hitachienergy rtu520 firmware12.4.1 and later · up to 12.4.11 inclusive
  • hitachienergy rtu520 firmware12.6.1 and later · up to 12.6.9 inclusive
  • hitachienergy rtu520 firmware12.7.1 and later · up to 12.7.6 inclusive
  • hitachienergy rtu520 firmware13.2.1 and later · up to 13.2.6 inclusive
  • hitachienergy rtu520 firmware13.4.1 and later · up to 13.4.3 inclusive
  • hitachienergy rtu530 firmware12.0.1 and later · up to 12.0.14 inclusive
  • hitachienergy rtu530 firmware12.2.1 and later · up to 12.2.11 inclusive
  • hitachienergy rtu530 firmware12.4.1 and later · up to 12.4.11 inclusive
  • hitachienergy rtu530 firmware12.6.1 and later · up to 12.6.9 inclusive
  • hitachienergy rtu530 firmware12.7.1 and later · up to 12.7.6 inclusive
  • hitachienergy rtu530 firmware13.2.1 and later · up to 13.2.6 inclusive
  • hitachienergy rtu530 firmware13.4.1 and later · up to 13.4.3 inclusive
  • hitachienergy rtu540 firmware12.0.1 and later · up to 12.0.14 inclusive
  • hitachienergy rtu540 firmware12.2.1 and later · up to 12.2.11 inclusive
  • hitachienergy rtu540 firmware12.4.1 and later · up to 12.4.11 inclusive
  • hitachienergy rtu540 firmware12.6.1 and later · up to 12.6.9 inclusive
  • hitachienergy rtu540 firmware12.7.1 and later · up to 12.7.6 inclusive
  • hitachienergy rtu540 firmware13.2.1 and later · up to 13.2.6 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Hitachi Energy). Independent of NVD's CPE analysis and usually ahead of it.

  • Hitachi Energy RTU500

    • RTU500 series CMU Firmware version 12.0.1 – 12.0.14, RTU500 series CMU Firmware version 12.2.1 – 12.2.11, RTU500 series CMU Firmware version 12.4.1 – 12.4.11, RTU500 series CMU Firmware version 12.6.1 – 12.6.9, RTU500 series CMU Firmware version 12.7.1 – 12.7.6, RTU500 series CMU Firmware version 13.2.1 – 13.2.6, RTU500 series CMU Firmware version 13.4.1 – 13.4.3affected

Same product

hitachienergy: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-2081A vulnerability exists in the HCI Modbus TCP function included in the product versions listed above.
    30Monitor
  • CVE-2023-5769 A vulnerability exists in the webserver that affects the RTU500 series product versions listed below.
    24Monitor
  • CVE-2023-5768A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below.
    24Monitor
  • CVE-2026-1772RTU500 web interface: An unprivileged user can read user management information.
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-57680 days apartA vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below.
    24Monitor
  • CVE-2023-576910 days apart A vulnerability exists in the webserver that affects the RTU500 series product versions listed below.
    24Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

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

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records