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CVE-2021-22731

CRITICALCVSS 9.8/10EPSS 1.40%

Last modified

CVE-2021-22731 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.40% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
1.40%

69.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Schneider-ElectricMcsesp083f23g0 Firmware< 8.22
Schneider-ElectricMcsesp083f23g0t Firmware< 8.22
Schneider-ElectricMcsesm043f23f0 Firmware< 8.22
Schneider-ElectricMcsesm053f1cu0 Firmware< 8.22
Schneider-ElectricMcsesm063f2cu0 Firmware< 8.22
Schneider-ElectricMcsesm053f1cs0 Firmware< 8.22
Schneider-ElectricMcsesm063f2cs0 Firmware< 8.22
Schneider-ElectricMcsesm083f23f0 Firmware< 8.22
Schneider-ElectricMcsesm103f2cu0 Firmware< 8.22
Schneider-ElectricMcsesm083f23f0h Firmware< 8.22
Schneider-ElectricMcsesm103f2cu0h Firmware< 8.22
Schneider-ElectricMcsesm103f2cs0h Firmware< 8.22
Schneider-ElectricMcsesm123f2lg0 Firmware< 8.22
Schneider-ElectricMcsesm093f1cu0 Firmware< 8.22
Schneider-ElectricMcsesm093f1cs0 Firmware< 8.22
Schneider-ElectricMcsesm103f2cs0 Firmware< 8.22

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-22731?
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.
How severe is CVE-2021-22731?
CVE-2021-22731 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.40% probability of exploitation in the next 30 days.
How do I fix CVE-2021-22731?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22731?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST