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No exploitation reportedFix available

CVE-2020-12038

No exploitation reported by the sources we read.

  • Published2020-05-19
  • WeaknessCWE-119 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Products that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and 6.11, RSLinx Classic: Version 4.11.00 and prior, RSNetWorx software: Version 28.00.00 and prior, Studio 5000 Logix Designer software: Version 32 and prior) is vulnerable. A memory corruption vulnerability exists in the algorithm that matches square brackets in the EDS subsystem. This may allow an attacker to craft specialized EDS files to crash the EDSParser COM object, leading to denial-of-service conditions.

Timeline

dates in UTC
  1. 2020-05-1922:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-12038?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-12038?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Rockwellautomation rslinx enterprise
BranchAffectedFixed in
6.0= 6.00.00no fix published
6.10= 6.10.00no fix published
6.11= 6.11.00no fix published
Rockwellautomation eds subsystem
BranchAffectedFixed in
28.0≤ 28.0.1no fix published
Rockwellautomation rslinx
BranchAffectedFixed in
4.11≤ 4.11.00no fix published

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-20-140-01 CISA4 known affected

    Rockwell Automation EDS Subsystem

    RSNetWorx software: Version 28.00.00 and prior · FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00 6.10 and 6.11 · Studio 5000 Logix Designer software: Version 32 and prior · +1 more

Full record on NVD

Fix

  1. Mitigation from the vendor CISA ICSA-20-140-01 · 4 productsApply patch by following the instructions in knowledgebase article RAid 1125928 (login required).
  2. Mitigation from the vendor CISA ICSA-20-140-01 · 4 productsBlock all traffic to EtherNet/IP or other CIP protocol-based devices from outside the manufacturing zone by blocking or restricting access to TCP Ports 2222, 7153 and UDP Port 44818 using proper network infrastructure controls, such as firewalls, UTM devices, or other security appliances. For more …
  3. Mitigation from the vendor CISA ICSA-20-140-01 · 4 productsLocate control system networks and devices behind firewalls and isolate them from the business network.
  4. Mitigation from the vendor CISA ICSA-20-140-01 · 4 productsWhen remote access is required, use secure methods, such as virtual private networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the connected devices.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVSS 3.15.5read 2026-10-23
  • NVDCVSS 2.04.3read 2026-10-23
  • CNAweakness (CWE)CWE-119read 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score2.6 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2020-05-19
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-12038?

Products that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and 6.11, RSLinx Classic: Version 4.11.00 and prior, RSNetWorx software: Version 28.00.00 and prior, Studio 5000 Logix Designer software: Version 32 and prior) is vulnerable. A memory corruption vulnerability exists in the algorithm that matches square brackets in the EDS subsystem. This may allow an attacker to craft specialized EDS files to crash the EDSParser COM object, leading to denial-of-service conditions.

Is CVE-2020-12038 actively exploited?

Active exploitation of CVE-2020-12038 has not been confirmed. Its EPSS score was 2.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-12038?

CVE-2020-12038 has a CVSS v3 base score of 5.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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