CVE-2023-27335Public exploitNetwork attack vector

Administrator action hijacking via unsanitized OPC UA metadata

Published May 3, 2024 · Updated Aug 2, 2024

Cross-site scripting in Softing edgeAggregator 3.60 and earlier allows remote attackers to run JavaScript in an administrator's browser. The test OPC UA server connection view inserts server-supplied manufacturer and product metadata into HTML without sanitization. Exploitation requires an administrator to test an attacker-controlled server; the script inherits that session's permissions, while root code execution requires chaining separate flaws.

CVSS severity6.6
Medium
EPSS probability1.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Softing edgeAggregator 3.60 and earlier allows remote attackers to run JavaScript in an administrator's browser. The test OPC UA server connection view inserts server-supplied manufacturer and product metadata into HTML without sanitization. Exploitation requires an administrator to test an attacker-controlled server; the script inherits that session's permissions, while root code execution requires chaining separate flaws.

The record

CVE
CVE-2023-27335
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
Softing Industrial Automation GmbH
Product
edgeAggregator
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=3.40
  2. Affected versionversion=3.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Softing Industrial Automation GmbH · edgeAggregatorversion=3.40; version=3.4.0

Published CVSS scores

6.6Softing Industrial Automation GmbHCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
8.8Zero Day InitiativeCVSS:3.0/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

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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