CVE-2020-8990: Western Digital My Cloud Home before 3.6.0 and ibi before 3.6.0 allow Session Fixation.

Q: How do I fix CVE-2020-8990?

ibi: upgrade to 3.6.0; my cloud home: upgrade to 3.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2020-8990 being exploited?

CVE-2020-8990 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-2020-8990 affect?

CVE-2020-8990 affects ibi, my cloud home. Severity is critical (CVSS 9.1). Western Digital My Cloud Home before 3.6.0 and ibi before 3.6.0 allow Session Fixation.

Q: How urgent is CVE-2020-8990?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADEUPGRADE

CVE-2020-8990 is a critical-severity flaw (CVSS 9.1) affecting ibi, my cloud home. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Western Digital My Cloud Home before 3.6.0 and ibi before 3.6.0 allow Session Fixation.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-384
Published	2020-02-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: western digital

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

Am I affected?

Timeline

2020-02-20 22:15 UTCPublished CVE record published
2026-06-17 03:27 UTCUpdated Record last modified

western digital ibi UPGRADE

Affected: < 3.6.0

Fixed in: 3.6.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.6.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ibi

Note

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

western digital my cloud home UPGRADE

Affected: < 3.6.0

Fixed in: 3.6.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy my-cloud-home || rpm -q my-cloud-home || my-cloud-home --version

2. UPGRADE to 3.6.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade my-cloud-home

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade my-cloud-home

Note

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

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-2020-8990?

ibi: upgrade to 3.6.0; my cloud home: upgrade to 3.6.0. Exact commands for each OS are on this page.

Is CVE-2020-8990 being exploited?

CVE-2020-8990 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-2020-8990 affect?

CVE-2020-8990 affects ibi, my cloud home. Severity is critical (CVSS 9.1). Western Digital My Cloud Home before 3.6.0 and ibi before 3.6.0 allow Session Fixation.

How urgent is CVE-2020-8990?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Western Digital vulnerabilities

Related CVEs

CVE-2020-10951 MEDIUM 4.7 UPGRADE UPGRADE Western Digital My Cloud Home and ibi devices before 2.2.0 allow clickjacking on sign-in pages.

References

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