HOMEVULNERABILITIESCVE-2020-7561
CRITICAL

CVE-2020-7561

CWE-284Published: November 19, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

A CWE-306: Missing Authentication for Critical Function vulnerability exists in Easergy T300 (with firmware 2.7 and older) that could cause a wide range of problems, including information exposure, denial of service, and command execution when access to a resource from an attacker is not restricted or incorrectly restricted.

NVD Source

Technical Analysis

CVE-2020-7561 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

schneider-electric2 product(s)
easergy t300 firmwareeasergy t300
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

PATCHhttps://www.se.com/ww/en/download/document/SEVD-2020-315-06/
PATCHhttps://www.se.com/ww/en/download/document/SEVD-2020-315-06/
ADVISORYhttps://us-cert.cisa.gov/ics/advisories/icsa-20-343-03
ADVISORYhttps://us-cert.cisa.gov/ics/advisories/icsa-20-343-03

All References (4)

→
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-03Third Party Advisory · US Government Resource
→
https://www.se.com/ww/en/download/document/SEVD-2020-315-06/Patch · Product · Vendor Advisory
→
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-03Third Party Advisory · US Government Resource
→
https://www.se.com/ww/en/download/document/SEVD-2020-315-06/Patch · Product · Vendor Advisory

Quick Facts

CVE IDCVE-2020-7561
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-284
CISA KEVNo
Affected1 vendor(s)
PublishedNov 19, 2020

Related CVEs (CWE-284)

CVE-2015-3062
10.0
CVE-2015-3063
10.0
CVE-2015-3061
10.0
CVE-2015-0929
10.0
CVE-2015-3060
10.0
CVE-2015-3064
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-7561 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. CVE data is provided under the NVD usage policy.
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