What is CVE-2021-35526?

CVE-2021-35526 is a medium-severity vulnerability in Hitachi Abb Power Grids System Data Manager – Sdm600, classified under Cleartext Storage of Sensitive Information. CVSS score: 6.3/10. Published 2021-09-08.

How severe is CVE-2021-35526?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Auth bypass in Hitachi Abb Power Grids System Data Manager – Sdm600

CVE-2021-35526

Backup file without encryption vulnerability is found in Hitachi ABB Power Grids System Data Manager – SDM600 allows attacker to gain access to sensitive information. This issue affects: Hitachi ABB Power Grids System Data Manager – SDM600 1.2 versions prior to FP2 HF6 (Build Nr. 1.2.14002.257).

Published 2021-09-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.001 (2.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Weakness classification (CWE)

References

search.abb.com/library/Download.aspx (Vendor Advisory)
us-cert.cisa.gov/ics/advisories/icsa-21-250-02 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2021-35526?: CVE-2021-35526 is a medium-severity vulnerability in Hitachi Abb Power Grids System Data Manager – Sdm600, classified under Cleartext Storage of Sensitive Information. CVSS score: 6.3/10. Published 2021-09-08.
How severe is CVE-2021-35526?: Medium severity. CVSS v3 base score is 6.3 out of 10.