CVE-2020-27251
A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This...
A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticated attacker to send malicious port ranges, which could result in remote code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticated attacker to send malicious port ranges, which could result in remote code execution.
- Record
CVE-2020-27251- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-122
- Updated
- 2026-11-02
CVE List No score
A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticated attacker to send malicious port ranges, which could result in remote code execution.
- Record
CVE-2020-27251- Weakness
- CWE-122
- Updated
- 2026-11-02
EUVDEUVD-2020-19764 No score
A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticated attacker to send malicious port ranges, which could result in remote code execution.
- Record
EUVD-2020-19764- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7hx6-pmgh-3p98 No score
A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This...
A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticated attacker to send malicious port ranges, which could result in remote code execution.
- Record
GHSA-7hx6-pmgh-3p98- Weakness
- CWE-122
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-27251 is a critical vulnerability (CVSS 9.8) in Rockwell Automation Factorytalk Linx, published November 26, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.82%, the 94th percentile. No source names a fixed version.