CVE-2020-27255

Name: CVE-2020-27255
Creator: NVD / NIST
Published: 2020-11-26T02:15:12.243+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.19%

Last modified Jun 17, 2026

CVE-2020-27255 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticated attacker to send malicious set attribute requests, which could result in the leaking of sensitive information. EPSS estimates a 3.19% chance of exploitation in the next 30 days.

Description

A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticated attacker to send malicious set attribute requests, which could result in the leaking of sensitive information. This information disclosure could lead to the bypass of address space layout randomization (ASLR).

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

3.19%

86.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-122

Affected Software

Vendor	Product	Versions
Rockwellautomation	Factorytalk Linx	<= 6.11

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-329-01Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-329-01Third Party Advisory, US Government Resource

Timeline

Published: Nov 26, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27255?

How severe is CVE-2020-27255?

CVE-2020-27255 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.19% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27255?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27255?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST