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CVE-2021-22772

CRITICALCVSS 9.8/10EPSS 1.54%

Last modified

CVE-2021-22772 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A CWE-306: Missing Authentication for Critical Function vulnerability exists in Easergy T200 ((Modbus) SC2-04MOD-07000100 and earlier), Easergy T200 ((IEC104) SC2-04IEC-07000100 and earlier), and Easergy T200 ((DNP3) SC2-04DNP-07000102 and earlier) that could cause unauthorized operation when authentication is bypassed.. EPSS estimates a 1.54% chance of exploitation in the next 30 days.

Description

A CWE-306: Missing Authentication for Critical Function vulnerability exists in Easergy T200 ((Modbus) SC2-04MOD-07000100 and earlier), Easergy T200 ((IEC104) SC2-04IEC-07000100 and earlier), and Easergy T200 ((DNP3) SC2-04DNP-07000102 and earlier) that could cause unauthorized operation when authentication is bypassed.

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
1.54%

71.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Schneider-ElectricT200i Firmware<= sc2-04mod-07000100
Schneider-ElectricT200i Firmware<= sc2-04iec-07000100
Schneider-ElectricT200i Firmware<= sc2-04dnp-07000102
Schneider-ElectricT200e Firmware<= sc2-04mod-07000100
Schneider-ElectricT200e Firmware<= sc2-04iec-07000100
Schneider-ElectricT200e Firmware<= sc2-04dnp-07000102
Schneider-ElectricT200p Firmware<= sc2-04mod-07000100
Schneider-ElectricT200p Firmware<= sc2-04iec-07000100
Schneider-ElectricT200p Firmware<= sc2-04dnp-07000102

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-22772?
A CWE-306: Missing Authentication for Critical Function vulnerability exists in Easergy T200 ((Modbus) SC2-04MOD-07000100 and earlier), Easergy T200 ((IEC104) SC2-04IEC-07000100 and earlier), and Easergy T200 ((DNP3) SC2-04DNP-07000102 and earlier) that could cause unauthorized operation when authentication is bypassed.
How severe is CVE-2021-22772?
CVE-2021-22772 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.54% probability of exploitation in the next 30 days.
How do I fix CVE-2021-22772?
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-2021-22772?

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Source: NVD / NIST