CVE-2020-6656
No exploitation reported by the sources we read.
- Published2021-01-07
- Fixed in7.20
- WeaknessCWE-20 · CWE-843
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
Eaton's easySoft software v7.xx prior to v7.22 are susceptible to file parsing type confusion remote code execution vulnerability. A malicious entity can execute a malicious code or make the application crash by tricking user upload a malformed .E70 file in the application. The vulnerability arises due to improper validation of user data supplied through E70 file which is causing Type Confusion.
Timeline
dates in UTC- 2021-01-0718:15CVE 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-2020-6656?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-6656?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 |
|---|---|---|---|
| 7.x | ≥ 7.00, < 7.20 | 7.20 | NVD |
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
Eaton EASYsoft (Update A)
EASYsoft: Versions 7.20 and prior of EASYsoft are affected
Fix
- Update Eaton easysoft to 7.20
- Mitigation from the vendor CISA ICSA-21-007-03 · 1 productEaton has patched the issues and released Version 7.22, which can be downloaded from Eaton's website.
- Mitigation from the vendor CISA ICSA-21-007-03 · 1 productNavigate to Eaton software download center -> Select “Software” -> “easySoft” -> v7.22
- Mitigation from the vendor CISA ICSA-21-007-03 · 1 productEaton recommends those affected by the report vulnerabilities use only .E70 files created from a fully trusted source.
- Mitigation from the vendor CISA ICSA-21-007-03 · 1 productIf the application crashes due to .E70 file upload, restart the application and do not upload the .E70 file again.
Advisories and patches
- www.eaton.comVendor Advisory
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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- 2021-01-07
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-6656?
Is CVE-2020-6656 actively exploited?
What is the CVSS score for CVE-2020-6656?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.