Medium 6.9Published Nov 14, 2025

CVE-2025-8386AVEVA Application Server IDE Basic Cross-site Scripting

Updated under an hour ago (Oct 26, 2026, 5:50 PM ET)

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It affects AVEVA Application Server. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for AVEVA Application Server

Exploited in the last 30 days

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.

CVSS: 6.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L
Weakness (CWE): CWE-80
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: icscert
NVD analysis: Deferred
Record last updated: Nov 17, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

AVEVA Application Server aveva:application_server (from the name)	through Versions 2023 R2 SP1 P02	CNA record

References

References

https://www.aveva.com/content/dam/aveva/documents/support/cyber-security-updates/SecurityBulletin-AVEVA-2025-005.pdf
https://www.cisa.gov/news-events/ics-advisories/icsa-25-317-02
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsa-25-317-02.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.