What’s Vulnerable › Vulnerabilities

CVE-2020-5802

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 44.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-29 · updated 2026-06-17
• Weakness: CWE-770

Description

An attacker-controlled memory allocation size can be passed to the C++ new operator in RnaDaSvr.dll by sending a specially crafted ConfigureItems message to TCP port 4241. This will cause an unhandled exception, resulting in termination of RSLinxNG.exe. Observed in FactoryTalk 6.11. All versions of FactoryTalk Linx are affected.

Affected products

• Rockwell Automation FactoryTalk Linx: through 6.11

References

• https://www.tenable.com/security/research/tra-2020-71
• https://www.tenable.com/security/research/tra-2020-71

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