No exploitation reported

CVE-2020-28215

No exploitation reported by the sources we read.

Published2020-12-11
WeaknessCWE-862

Am I 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

A CWE-862: Missing Authorization vulnerability exists in Easergy T300 (firmware 2.7 and older), that could cause a wide range of problems, including information exposures, denial of service, and arbitrary code execution when access control checks are not applied consistently.

Timeline

dates in UTC

2020-12-1101:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-28215?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-28215?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Schneider-electric easergy t300 firmwareversion to verify

Branch	Affected	Fixed in	Source
2.7	≤ 2.7	no fix published	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

ICSA-20-343-03 CISA1 known affected
Schneider Electric Easergy T300
Easergy T300 with firmware: Versions 2.7 and prior

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-20-343-03 · 1 productSchneider 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.
Mitigation from the vendor CISA ICSA-20-343-03 · 1 productLocate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
Mitigation from the vendor CISA ICSA-20-343-03 · 1 productInstall physical controls so no unauthorized personnel can access industrial control and safety systems, components, peripheral equipment, and networks.
Mitigation from the vendor CISA ICSA-20-343-03 · 1 productPlace all controllers in locked cabinets and never leave them in “Program” mode.
Mitigation from the vendor CISA ICSA-20-343-03 · 1 productNever connect programming software to any network other than the network for which the devices are intended.
Mitigation from the vendor CISA ICSA-20-343-03 · 1 productScan all methods of mobile data exchange with the isolated network (e.g., CDs, USB drives, etc.) before use in the terminals or any node connected to these networks.

Advisories and patches

www.se.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
CNAweakness (CWE)CWE-862read 2026-10-23
FIRST EPSSEPSS score2.3 %2026-10-22

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: 2020-12-11
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-28215?

Is CVE-2020-28215 actively exploited?

Active exploitation of CVE-2020-28215 has not been confirmed. Its EPSS score was 2.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-28215?

CVE-2020-28215 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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