CVE-2021-38389
9.8
CRITICAL · CVSS 3.1 · EPSS 10.4% (pctl 96)
Patch early
EPSS 10.4% — above the 10% action threshold.
Description
Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 10.37% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-121 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-10-18 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| advantech | webaccess |
References
→ the Explorer · watch your stack · NVD