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Fencer Vulns
medium 6.5

CVE-2020-28218 json

A CWE-1021: Improper Restriction of Rendered UI Layers or Frames vulnerability exists in Easergy T300 (firmware 2.7 and older), that would…

published 2020-12-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-20702

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

A CWE-1021: Improper Restriction of Rendered UI Layers or Frames vulnerability exists in Easergy T300 (firmware 2.7 and older), that would allow an attacker to trick a user into initiating an unintended action.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-20-343-03 updated cvss 6.3

Schneider Electric Easergy T300

  • Schneider Electric Software, LLC Easergy T300 with firmware <= 2.7
    affected: mitigation “Schneider Electric recommends users upgrade to v2.7.1, which is available from the Schneider Electric Customer Care Center. Alternatively, users may disable port forwarding in the product firewall.” se.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • n/a Easergy T300 (firmware 2.7 and older)

Classification

Weakness
  • CWE-1021 Improper Restriction of Rendered UI Layers or Frames

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.