CVE-2021-22731 json
Weak Password Recovery Mechanism for Forgotten Password vulnerability exists on Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior…
published 2021-05-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9866
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- schneider-electric mcsesp083f23g0_firmware 8.22
- schneider-electric mcsesp083f23g0t_firmware 8.22
- schneider-electric mcsesm043f23f0_firmware 8.22
- schneider-electric mcsesm053f1cu0_firmware 8.22
- schneider-electric mcsesm063f2cu0_firmware 8.22
- schneider-electric mcsesm053f1cs0_firmware 8.22
- schneider-electric mcsesm063f2cs0_firmware 8.22
- schneider-electric mcsesm083f23f0_firmware 8.22
- schneider-electric mcsesm103f2cu0_firmware 8.22
- schneider-electric mcsesm083f23f0h_firmware 8.22
- schneider-electric mcsesm103f2cu0h_firmware 8.22
- schneider-electric mcsesm103f2cs0h_firmware 8.22
- schneider-electric mcsesm123f2lg0_firmware 8.22
- schneider-electric mcsesm093f1cu0_firmware 8.22
- schneider-electric mcsesm093f1cs0_firmware 8.22
- schneider-electric mcsesm103f2cs0_firmware 8.22
Exploit prediction
1.40% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- n/a Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior
Classification
- Weakness
-
- CWE-640 Weak Password Recovery Mechanism for Forgotten Password
References
-
download.schneider-electric.com
/files?p_Doc_Ref=SEVD-2021-130-01
patch, vendor-advisory
Sources
- CVE List CVE-2021-22731
- NVD CVE-2021-22731
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