CVE-2020-27251

9.8 criticalEPSS 6.8%

Critical (9.8) in rockwellautomation factorytalk linx. EPSS 6.8% chance of exploitation in the next 30 days.

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.

Severity

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

EPSS: 6.8% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)
CWE: CWE-122
Published: 2020-11-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

rockwellautomation:factorytalk_linx

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-329-01
https://us-cert.cisa.gov/ics/advisories/icsa-20-329-01

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