vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2021-22731

CRITICAL
9.8
CVSS Score
Published: May 26, 2021 at 07:19 PM UTC
Updated: June 17, 2026 at 03:37 AM UTC
34 products affected across 1 vendorMcsesm083f23f0 FirmwareMcsesm093f1cu0 FirmwareMcsesm123f2lg0 Firmware

Using Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior by N/A?

Get instant alerts when new vulnerabilities affect Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
CRITICAL9.8
Exploit prediction
EPSS 1%

Description

Weak Password Recovery Mechanism for Forgotten Password vulnerability exists on Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior which could cause an unauthorized password change through HTTP / HTTPS when basic user information is known by a remote attacker.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mcsesm043f23f0 Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm043f23f0 (same device)
Mcsesm053f1cs0 Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm053f1cs0 (same device)
Mcsesm053f1cu0 Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm053f1cu0 (same device)
Mcsesm063f2cs0 Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm063f2cs0 (same device)
Mcsesm063f2cu0 Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm063f2cu0 (same device)
Mcsesm083f23f0 Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm083f23f0 (same device)
Mcsesm083f23f0h Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm083f23f0h (same device)
Mcsesm093f1cs0 Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm093f1cs0 (same device)
Mcsesm093f1cu0 Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm093f1cu0 (same device)
Mcsesm103f2cs0 Firmware· Schneider Electric
95%
v < 8.22
Affected range stops below 8.22, so it looks safe — our inference, not a vendor statement
schneider-electric-mcsesm103f2cs0 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-01

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-640

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card