CVE-2025-8386

AVEVA Application Server IDE Basic Cross-site Scripting

Published Nov 14, 2025 CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
Description
The vulnerability, if exploited, could allow an authenticated miscreant
(with privilege of "aaConfigTools") to tamper with App Objects' help
files and persist a cross-site scripting (XSS) injection that when
executed by a victim user, can result in horizontal or vertical
escalation of privileges. The vulnerability can only be exploited during
config-time operations within the IDE component of Application Server.
Run-time components and operations are not affected.

Remediation

Vendor Solution

AVEVA recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. Users using affected product versions should apply security updates to mitigate the risk of exploit. All affected versions of the Application Server IDE can be fixed by upgrading to AVEVA System Platform 2023 R2 SP1 P03 https://softwaresupportsp.aveva.com/en-US/downloads/products/details/d32b2534-9601-4beb-ac78-046ca2ef594d  or higher. The following general defensive measures are recommended: * Audit assigned permissions to ensure that only trusted users are added to the "aaConfigTools" OS Group. For additional information on Application Server OS Security groups and accounts, see https://docs.aveva.com/bundle/sp-install/page/738031.html For more information, see AVEVA's Security Bulletin AVEVA-2025-005 https://www.aveva.com/content/dam/aveva/documents/support/cyber-security-updates/SecurityBulletin_AVEVA-2025-005.pdf or AVEVA's bulletins page https://www.aveva.com/en/support-and-success/cyber-security-updates/ .

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Aveva
Aveva application Server
Vendors & Products Aveva
Aveva application Server
Type Values Removed Values Added
Description The vulnerability, if exploited, could allow an authenticated miscreant (with privilege of "aaConfigTools") to tamper with App Objects' help files and persist a cross-site scripting (XSS) injection that when executed by a victim user, can result in horizontal or vertical escalation of privileges. The vulnerability can only be exploited during config-time operations within the IDE component of Application Server. Run-time components and operations are not affected.
Title AVEVA Application Server IDE Basic Cross-site Scripting
Weaknesses CWE-80
References
Metrics cvssV3_1

{'score': 6.9, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Nov 17, 2025, 4:56 PM
Reserved
Jul 30, 2025, 6:49 PM
Status
Deferred
Published
Nov 15, 2025, 12:15 AM
Modified
Oct 7, 2026, 9:10 PM