MEDIUM
CVE-2020-28214
CWE-760Published: December 11, 2020· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
A CWE-760: Use of a One-Way Hash with a Predictable Salt vulnerability exists in Modicon M221 (all references, all versions), that could allow an attacker to pre-compute the hash value using dictionary attack technique such as rainbow tables, effectively disabling the protection that an unpredictable salt would provide.
Technical Analysis
CVE-2020-28214 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Vendors & Products
schneider-electric2 product(s)
modicon m221 firmwaremodicon m221
Source: NVD CPE · 2 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04Third Party Advisory · US Government Resource
→
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/Vendor Advisory
→
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04Third Party Advisory · US Government Resource
→
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/Vendor Advisory
Quick Facts
CVE IDCVE-2020-28214
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-760
CISA KEVNo
Affected1 vendor(s)
PublishedDec 11, 2020
Related CVEs (CWE-760)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-28214 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.