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CVE-2020-11999

21
FAUCET Score

CVE-2020-11999 is a high-severity vulnerability affecting multiple Rockwell Automation products, including FactoryTalk Linx, RSLinx Classic, and Studio 5000 Logix Designer. It stems from an unsanitized API call that allows an authenticated attacker to provide malicious files for processing, potentially leading to unauthorized code execution and data modification. The CVSS score of 8.1 reflects a network-based attack with low complexity and high impact on confidentiality and integrity. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
6.00CPE matchmatch criteria
cpe:2.3:a:rockwellautomation:factorytalk_linx:6.00:*:*:*:*:*:*:*
6.10CPE matchmatch criteria
cpe:2.3:a:rockwellautomation:factorytalk_linx:6.10:*:*:*:*:*:*:*
6.11CPE matchmatch criteria
cpe:2.3:a:rockwellautomation:factorytalk_linx:6.11:*:*:*:*:*:*:*
<= 4.11.00CPE matchmatch criteria
cpe:2.3:a:rockwellautomation:rslinx_classic:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.80%
Probability of exploitation in next 30 days
EPSS Percentile
85.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0280 is in the 84th percentile among its peer group of 17,844 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

us-cert.gov / ics/advisories/icsa-20-163-02
Third Party AdvisoryUS Government Resource