CVE-2021-35526: Backup file without encryption vulnerability is found in Hitachi ABB Power Grids System Data Manager – SDM600

Q: How do I fix CVE-2021-35526?

sdm600 firmware: upgrade to 1.2.14002.257. Exact commands for each OS are on this page.

Q: Is CVE-2021-35526 being exploited?

CVE-2021-35526 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-35526 affect?

CVE-2021-35526 affects sdm600 firmware. Severity is medium (CVSS 6.3). 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

Q: How urgent is CVE-2021-35526?

Priority 23/100. No elevated risk signals yet.

Routine

MEDIUM 6.3UPGRADE

CVE-2021-35526 is a medium-severity flaw (CVSS 6.3) affecting sdm600 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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).

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-312, CWE-863
Published	2021-09-08
Last modified	2026-06-17

Publisher (CNA): Hitachi Energy · Vendor: hitachiabb-powergrids

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-09-08 16:15 UTCPublished CVE record published
2026-06-17 03:57 UTCUpdated Record last modified

hitachiabb-powergrids sdm600 firmware UPGRADE

Affected: >= 1.2 and < 1.2.14002.257

Fixed in: 1.2.14002.257

Safe to downgrade to: a release before 1.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-35526?

sdm600 firmware: upgrade to 1.2.14002.257. Exact commands for each OS are on this page.

Is CVE-2021-35526 being exploited?

CVE-2021-35526 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-35526 affect?

CVE-2021-35526 affects sdm600 firmware. Severity is medium (CVSS 6.3). 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

How urgent is CVE-2021-35526?

Priority 23/100. No elevated risk signals yet.

Software pages

ABB vulnerabilities

References

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