CVE-2020-28215

highpriority · track · 40OT risk · elevatedEPSS 0.023 · 84 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.34% (84th) EPSS

CVSS 7.5 · high

Is it mine?

5 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationEasergy T300 with firmwarecisa_csaf_ot
Install physical controls so no unauthorized personnel can access industrial control and safety systems, components, peripheral equipment, and networks.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.07.7highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:Hsecondary · CISA US

v3.18.9highAV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-285USCWE-862USCWE-862USCWE-862US

affected products (5)

Products and version ranges known to be affected.

Easergy T300 with firmware: Versions 2.7 and priorall versionscisa_csaf_otUS
Schneider Electric Software, LLC Easergy T300 with firmware≤ 2.7cisa_csaf_otUS
n/a Easergy T300 (firmware 2.7 and older)≤ Easergy T300 (firmware 2.7 and older)enisa_euvdEU
Schneider Electric Easergy T300 (RTU)≤ 2.7.1fstec_bduRU
schneider-electric easergy t300 firmware≤ 2.7nvdUScpe:2.3:o:schneider-electric:easergy_t300_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-20-343-03Schneider Electric Easergy T3002020-12-08icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow an attacker to obtain unauthorized access to the internal product LAN, which could result in exposure of sensitive information, denial of service, and remote code execution when access to a resource from an attacker is not restricted or incorrectly restricted.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2020-12-11modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

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