Cyber Resilience

CVE-2023-5769

Medium

Published: 14 December 2023

Published
14 December 2023
Modified
27 February 2026
KEV Added
—
Patch
—
CVSS Score v3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
EPSS Score 0.0010 27.2th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-5769 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Hitachienergy Rtu520 Firmware. Its CVSS base score is 5.4 (Medium).

Operationally, ranked at the 27.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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 user input being improperly sanitized.

CWE(s)
CWE-79

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

hitachienergy
rtu520 firmware
12.0.1 — 12.0.14 · 12.2.1 — 12.2.11 · 12.4.1 — 12.4.11
hitachienergy
rtu530 firmware
12.0.1 — 12.0.14 · 12.2.1 — 12.2.11 · 12.4.1 — 12.4.11
hitachienergy
rtu540 firmware
12.0.1 — 12.0.14 · 12.2.1 — 12.2.11 · 12.4.1 — 12.4.11
hitachienergy
rtu560 firmware
12.0.1 — 12.0.14 · 12.2.1 — 12.2.11 · 12.4.1 — 12.4.11

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References