CVE-2021-22731
Weak Password Recovery Mechanism for Forgotten Password vulnerability exists on Modicon Managed...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-22731- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-640
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-22731- Weakness
- CWE-640
- Updated
- 2026-11-02
EUVDEUVD-2021-9866 No score
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.
- Record
EUVD-2021-9866- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6q5v-82v5-mpf9 No score
Weak Password Recovery Mechanism for Forgotten Password vulnerability exists on Modicon Managed...
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.
- Record
GHSA-6q5v-82v5-mpf9- Weakness
- CWE-640
- Updated
- 2026-11-02
Affected products
- schneider-electric mcsesm043f23f0 firmware
- schneider-electric mcsesm053f1cs0 firmware
- schneider-electric mcsesm053f1cu0 firmware
- schneider-electric mcsesm063f2cs0 firmware
- schneider-electric mcsesm063f2cu0 firmware
- schneider-electric mcsesm083f23f0 firmware
- schneider-electric mcsesm083f23f0h firmware
- schneider-electric mcsesm093f1cs0 firmware
- schneider-electric mcsesm093f1cu0 firmware
- schneider-electric mcsesm103f2cs0 firmware
- schneider-electric mcsesm103f2cs0h firmware
- schneider-electric mcsesm103f2cu0 firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-22731 is a critical vulnerability (CVSS 9.8) in Schneider-electric Mcsesm043f23f0 Firmware, published May 26, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.40%, the 72nd percentile. No source names a fixed version.