CVE-2020-6984
No exploitation reported by the sources we read.
- Published2020-03-16
- WeaknessCWE-327
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « 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
Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior, The cryptographic function utilized to protect the password in MicroLogix is discoverable.
Timeline
dates in UTC- 2020-03-1616:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-6984?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-6984?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| — | all versions | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| — | all versions | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 21.1 | ≤ 21.001 | no fix published | NVD |
1 more product 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
Rockwell Automation MicroLogix Controllers and RSLogix 500 Software
RSLogix 500 Software: v12.001 and prior · Series B: v21.001 and prior · Series A: all versions · +1 more
Fix
- Mitigation from the vendor CISA ICSA-20-070-06 · 4 productsFor MicroLogix 1400 series B controllers, Rockwell recommends affected users apply FRN 21.002 or later for MicroLogix 1400 Series B devices and use the enhanced password security feature.
- Mitigation from the vendor CISA ICSA-20-070-06 · 4 productsRockwell Automation reports that there are currently no mitigations for MicroLogix 1400 series A controllers or MicroLogix 1100 controllers.
- Mitigation from the vendor CISA ICSA-20-070-06 · 4 productsFor RSLogix 500 software, Rockwell Automation recommends affected users apply v11 or later and use in conjunction with applied FRN 21.001 or later for Micrologix 1400 Series B devices. Other configurations do not have direct mitigations.
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Published
- 2020-03-16
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-6984?
Is CVE-2020-6984 actively exploited?
What is the CVSS score for CVE-2020-6984?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.