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9.8
CVE-2021-38389: Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code.
CVE-2021-38389 · published 5 years ago
Summary
Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| advantech | webaccess |
<= 9.0.2 cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:* |
Original advisory text
Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code.
Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute code.
References
- https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02 Mitigation Third Party Advisory US Government Resource
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker full control (estimated)
Type
CWE-121Stack-based Buffer Overflow
CWE-787Out-of-bounds Write
Timeline
Published18 Oct 2021
Updated16 Oct 2026
First seen29 Sep 2026
Sources
CVE-2021-38389 · NVD
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