CVE-2020-27253 Denial of service in FactoryTalk Linx
A remote unauthenticated attacker can cause a denial-of-service condition in FactoryTalk Linx by sending a malicious packet.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-27253?
CVE-2020-27253 is a high-severity denial of service vulnerability in FactoryTalk Linx, published on 26 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw exists in the Ingress/Egress checks routine of FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticated attacker to specifically craft a malicious packet resulting in a denial-of-service condition on the device.
Weakness: CWE-20
Which versions are affected by CVE-2020-27253?
It affects 1 product.
Products include Rockwellautomation Factorytalk Linx.
How do I fix CVE-2020-27253?
No fix has been published for CVE-2020-27253 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-27253 being exploited?
There is no known exploitation of CVE-2020-27253 in the wild and no public exploit code.
Other vulnerabilities in 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-x592-jf8v-v754.