CVE-2026-36226Public exploitNetwork attack vector

Browser script execution via unsanitized decryption field

Published May 22, 2026 · Updated May 22, 2026

Cross-site scripting in Advantech WebAccess/SCADA 8.0-2015.08.16 allows remote attackers to expose sensitive browser data. The Create New Project User component renders the decryption field without sufficient sanitization or output encoding, so supplied markup runs as JavaScript. A victim must save or preview the record; code executes in that authenticated user's browser context and can access session-visible data.

CVSS severity6.1
Medium
EPSS probability0.26%
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 Advantech WebAccess/SCADA 8.0-2015.08.16 allows remote attackers to expose sensitive browser data. The Create New Project User component renders the decryption field without sufficient sanitization or output encoding, so supplied markup runs as JavaScript. A victim must save or preview the record; code executes in that authenticated user's browser context and can access session-visible data.

The record

CVE
CVE-2026-36226
Published
May 22, 2026
Updated
May 22, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 22, 2026CVE publishedPublication date reported by the CVE source.
  2. May 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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