CVE-2021-32984
No exploitation reported by the sources we read.
- Published2022-04-04
- Fixed in3.00
- WeaknessCWE-287 · CWE-288
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
All programming connections receive the same unlocked privileges, which can result in a privilege escalation. During the time Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, an attacker can connect to the PLC and read the project without authorization.
Timeline
dates in UTC- 2022-04-0420:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-32984?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-32984?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 |
|---|---|---|---|
| 3.0 | < 3.00 | 3.00 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.0 | < 3.00 | 3.00 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.0 | < 3.00 | 3.00 | NVD |
17 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
Automation Direct CLICK PLC CPU Modules
CLICK PLC CPU Modules: C0-1x CPUs with All firmware prior to v3.00
Fix
- Update Automationdirect c0-10are-d firmware to 3.00
- Mitigation from the vendor CISA ICSA-21-166-02 · 1 productAutomation Direct reports these vulnerabilities are all mitigated by Version 3.00 and recommends users update software and firmware to the latest version.
- Mitigation from the vendor CISA ICSA-21-166-02 · 1 productAutomation Direct also recommends users follow its security guidelines.
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:H/A:H
- Published
- 2022-04-04
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-32984?
Is CVE-2021-32984 actively exploited?
What is the CVSS score for CVE-2021-32984?
Running Automation Direct CLICK PLC CPU? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
No credit card required · No monthly cap on website lookups · 250 API requests/month
Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
- Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.
Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.