What’s Vulnerable › Vulnerabilities

CVE-2019-3951

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-12-12 · updated 2026-06-17
• Weakness: CWE-121

Description

Advantech WebAccess before 8.4.3 allows unauthenticated remote attackers to execute arbitrary code or cause a denial of service (memory corruption) due to a stack-based buffer overflow when handling IOCTL 70533 RPC messages.

Affected products

• Advantech WebAccess: before 8.4.3 — fixed in 8.4.3

How to fix

Upgrade to a fixed version: Advantech WebAccess 8.4.3. Check the vendor advisory for mitigations.

References

• https://www.tenable.com/security/research/tra-2019-52
• https://www.tenable.com/security/research/tra-2019-52

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