CVE-2021-27887: Cross-site Scripting (XSS) vulnerability in the main dashboard of Ellipse APM versions allows an authenticated

Routine

MEDIUM 6.3UPGRADE

CVE-2021-27887 is a medium-severity flaw (CVSS 6.3) affecting ellipse asset performance management. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site Scripting (XSS) vulnerability in the main dashboard of Ellipse APM versions allows an authenticated user or integrated application to inject malicious data into the application that can then be executed in a victim’s browser. This issue affects: Hitachi ABB Power Grids Ellipse APM 5.3 version 5.3.0.1 and prior versions; 5.2 version 5.2.0.3 and prior versions; 5.1 version 5.1.0.6 and prior versions.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-06-14
Last modified	2026-06-17

Publisher (CNA): MITRE · 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

2021-06-14 22:15 UTCPublished CVE record published
2026-06-17 03:45 UTCUpdated Record last modified

hitachiabb-powergrids ellipse asset performance management UPGRADE

Affected: >= 5.1.0.0 and <= 5.1.0.6 · >= 5.2.0.0 and <= 5.2.0.3 · >= 5.3.0.0 and <= 5.3.0.1

Fixed in: newer than 5.3.0.1

Safe to downgrade to: a release before 5.1.0.0

1. Check installed version

apt-cache policy ellipse-asset-performance-management || rpm -q ellipse-asset-performance-management || ellipse-asset-performance-management --version

2. UPGRADE to newer than 5.3.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ellipse-asset-performance-management

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ellipse-asset-performance-management

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 5.1.0.0 (Debian / Ubuntu)

apt-cache madison ellipse-asset-performance-management sudo apt install ellipse-asset-performance-management=<VERSION_BEFORE_5.1.0.0> sudo apt-mark hold ellipse-asset-performance-management

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

dnf --showduplicates list ellipse-asset-performance-management sudo dnf downgrade ellipse-asset-performance-management-<VERSION_BEFORE_5.1.0.0> sudo dnf versionlock add ellipse-asset-performance-management

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-2021-27887?

ellipse asset performance management: upgrade to newer than 5.3.0.1. Exact commands for each OS are on this page.

Is CVE-2021-27887 being exploited?

CVE-2021-27887 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-2021-27887 affect?

CVE-2021-27887 affects ellipse asset performance management. Severity is medium (CVSS 6.3). Cross-site Scripting (XSS) vulnerability in the main dashboard of Ellipse APM versions allows an authenticated user or integrated application to inject malicious data into the application that can then be executed in a victim’s browser. Thi

How urgent is CVE-2021-27887?

Priority 33/100. No elevated risk signals yet.

Software pages

ABB vulnerabilities

References

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