CVE-2025-8386
MEDIUMAVEVA Application Server - Authenticated XSS via App Objects Help Files
Title source: llmDescription
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.
References (3)
Core 3
Core References
Various Sources
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsa-25-317-02.json
Various Sources
https://www.aveva.com/content/dam/aveva/documents/support/cyber-security-updates/SecurityBulletin-AVEVA-2025-005.pdf
Third Party Advisory, US Government Resource
https://www.cisa.gov/news-events/ics-advisories/icsa-25-317-02
Scores
CVSS v3
6.9
EPSS
0.0014
EPSS Percentile
3.3%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-80
Status
published
Products (1)
AVEVA/Application Server
< Versions 2023 R2 SP1 P02
Published
Nov 15, 2025
Tracked Since
Feb 18, 2026