What’s Vulnerable › Vulnerabilities

CVE-2020-12002

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 9.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-08 · updated 2026-06-17
• Weakness: CWE-121

Description

Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple stack-based buffer overflow vulnerabilities exist caused by a lack of proper validation of the length of user-supplied data, which may allow remote code execution.

Affected products

• Advantech WebAccess: through 8.4.4; 9.0.0

References

• https://www.us-cert.gov/ics/advisories/icsa-20-128-01
• https://www.zerodayinitiative.com/advisories/ZDI-20-590/
• https://www.zerodayinitiative.com/advisories/ZDI-20-591/
• https://www.zerodayinitiative.com/advisories/ZDI-20-592/
• https://www.zerodayinitiative.com/advisories/ZDI-20-619/
• https://www.zerodayinitiative.com/advisories/ZDI-20-622/
• https://www.zerodayinitiative.com/advisories/ZDI-20-624/
• https://www.zerodayinitiative.com/advisories/ZDI-20-625/
• https://www.zerodayinitiative.com/advisories/ZDI-20-633/
• https://www.zerodayinitiative.com/advisories/ZDI-20-634/
• https://www.us-cert.gov/ics/advisories/icsa-20-128-01
• https://www.zerodayinitiative.com/advisories/ZDI-20-590/

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