CVE-2021-31558Network attack vector

Stored browser script execution via unchecked description input

Published Dec 22, 2021 · Updated Sep 16, 2024

Stored cross-site scripting in Delta Electronics DIAEnergie 1.7.5 and earlier allows remote attackers to execute browser script via descr. DIAE_hierarchyHandler.ashx accepts attacker-controlled descr content without adequate input validation, allowing executable markup to be persisted. The CNA description calls the injector unauthenticated, while the published CVSS assessment assigns low privileges; execution occurs when stored content is rendered in a browser.

CVSS severity6.5
Medium
EPSS probability10.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Delta Electronics DIAEnergie 1.7.5 and earlier allows remote attackers to execute browser script via descr. DIAE_hierarchyHandler.ashx accepts attacker-controlled descr content without adequate input validation, allowing executable markup to be persisted. The CNA description calls the injector unauthenticated, while the published CVSS assessment assigns low privileges; execution occurs when stored content is rendered in a browser.

The record

CVE
CVE-2021-31558
Published
Dec 22, 2021
Updated
Sep 16, 2024
Vendor
Delta Electronics, Inc.
Product
DIAEnergie
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 22, 2021CVE 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=All <=1.7.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Delta Electronics, Inc. · DIAEnergieversion=All <=1.7.5

Published CVSS scores

6.5CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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