VULNERABILITY INTELLIGENCE
CVE-2021-33023
CVSS score9.8 CRITICAL
EPSS probability2.35%
CISA KEVNot currently listed
Published2021-10-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.
Weakness classification
- ics-cert@hq.dhs.gov: CWE-122
- nvd@nist.gov: CWE-787
Primary references
- ics-cert@hq.dhs.gov — Mitigation, Third Party Advisory, US Government Resource
- af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Third Party Advisory, US Government Resource