CVE-2020-5806 Integer overflow in Rockwell FactoryTalk Linx
An attacker can cause a denial of service in Rockwell FactoryTalk Linx by sending a crafted message that triggers an integer overflow in memory allocation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-5806?
CVE-2020-5806 is a medium-severity vulnerability in Rockwell FactoryTalk Linx, published on 29 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-770
Which versions are affected by CVE-2020-5806?
It affects 1 product.
Products include Rockwellautomation Factorytalk Linx.
How do I fix CVE-2020-5806?
No fix has been published for CVE-2020-5806 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-5806 being exploited?
There is no known exploitation of CVE-2020-5806 in the wild and no public exploit code.
Other vulnerabilities in Rockwell FactoryTalk Linx
- CVE-2020-27251 Memory corruption in FactoryTalk Linx
- CVE-2020-12001 Path traversal in FactoryTalk Linx, RSLinx Classic, Connected Components Workbench, ControlFLASH Plus, FactoryTalk Asset Centre, FactoryTalk Linx CommDTM, Studio 5000 Launcher, Studio 5000 Logix Designer software
- CVE-2025-9067 Rockwell Automation FactoryTalk® Linx Privilege Escalation Vulnerabilities
- CVE-2025-9068 Rockwell Automation FactoryTalk® Linx Privilege Escalation Vulnerabilities
- CVE-2025-7972 Rockwell Automation FactoryTalk® Linx Network Browser Security Bypass Vulnerability
Sources
Also known as GHSA-3g7c-253j-whp9.