CVE-2021-28052: A tenant administrator Hitachi Content Platform (HCP) may modify the configuration in another tenant without a

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HIGH 7.5UPGRADE

CVE-2021-28052 is a high-severity flaw (CVSS 7.5) affecting vantara. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A tenant administrator Hitachi Content Platform (HCP) may modify the configuration in another tenant without authorization, potentially allowing unauthorized access to data in the other tenant. Also, a tenant user (non-administrator) may view configuration in another tenant without authorization. This issue affects: Hitachi Vantara Hitachi Content Platform versions prior to 8.3.7; 9.0.0 versions prior to 9.2.3.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-264, CWE-862
Published	2022-09-26
Last modified	2026-06-17

Publisher (CNA): Hitachi, Ltd. · Vendor: hitach

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

Am I affected?

Timeline

2022-09-26 16:15 UTCPublished CVE record published
2026-06-17 03:45 UTCUpdated Record last modified

hitach vantara UPGRADE

Affected: < 8.3.7 · >= 9.0.0 and < 9.2.3

Fixed in: 8.3.7, 9.2.3

Safe to downgrade to: a release before 9.0.0

1. Check installed version

apt-cache policy vantara || rpm -q vantara || vantara --version

2. UPGRADE to 8.3.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade vantara

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade vantara

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 9.0.0 (Debian / Ubuntu)

apt-cache madison vantara sudo apt install vantara=<VERSION_BEFORE_9.0.0> sudo apt-mark hold vantara

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list vantara sudo dnf downgrade vantara-<VERSION_BEFORE_9.0.0> sudo dnf versionlock add vantara

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2021-28052?

vantara: upgrade to 8.3.7, 9.2.3. Exact commands for each OS are on this page.

Is CVE-2021-28052 being exploited?

CVE-2021-28052 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-2021-28052 affect?

CVE-2021-28052 affects vantara. Severity is high (CVSS 7.5). A tenant administrator Hitachi Content Platform (HCP) may modify the configuration in another tenant without authorization, potentially allowing unauthorized access to data in the other tenant. Also, a tenant user (non-administrator) may vi

How urgent is CVE-2021-28052?

Priority 40/100. High severity

References

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