How severe is CVE-2020-5806?

CVE-2020-5806 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-5806 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5806?

CVE-2020-5806 affects Rockwellautomation Factorytalk Linx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5806?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-5806 published?

CVE-2020-5806 was published on 2020-12-29 and last updated on 2026-06-17.

CVE-2020-5806

CVE-2020-5806 is a medium-severity vulnerability in Rockwellautomation Factorytalk Linx with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Rockwellautomation Factorytalk Linx
Published: 2020-12-29
Last modified: 2026-06-17

Description

An attacker-controlled memory allocation size can be passed to the C++ new operator in the CServerManager::HandleBrowseLoadIconStreamRequest in messaging.dll. This can be done by sending a specially crafted message to 127.0.0.1:7153. Observed in FactoryTalk Linx 6.11. All versions of FactoryTalk Linx are affected.

Frequently asked questions

What is CVE-2020-5806?: An attacker-controlled memory allocation size can be passed to the C++ new operator in the CServerManager::HandleBrowseLoadIconStreamRequest in messaging.dll. This can be done by sending a specially crafted message to 127.0.0.1:7153. Observed in FactoryTalk Linx 6.11. All versions of FactoryTalk Linx are affected.
How severe is CVE-2020-5806?: CVE-2020-5806 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-5806 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5806?: CVE-2020-5806 affects Rockwellautomation Factorytalk Linx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5806?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-5806 published?: CVE-2020-5806 was published on 2020-12-29 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:rockwellautomation:factorytalk_linx:*:*:*:*:*:*:*:*

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