CVE-2026-12628: IBM Storage Protect Client 8.1.0.0 through 8.2.1.0 and IBM Storage Protect Snapshot For Windows 8.1.0.0 throug

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CRITICAL 9.1REMOTEUPGRADE

CVE-2026-12628 is a critical-severity flaw (CVSS 9.1) affecting storage protect. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM Storage Protect Client 8.1.0.0 through 8.2.1.0 and IBM Storage Protect Snapshot For Windows 8.1.0.0 through 8.2.1.0 could allow a remote attacker to bypass authentication due to the use of a hardcoded credential in the FlashCopy Manager (FCM) authentication mechanism. The application contains a static credential embedded in multiple authentication code paths, and does not properly validate authentication responses, which may allow an unauthen

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	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-798
Published	2026-06-22
Last modified	2026-06-26

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-06-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-22 16:16 UTCPublished CVE record published
2026-06-26 20:01 UTCUpdated Record last modified

ibm storage protect UPGRADE

Affected: >= 8.1.0.0 and < 8.2.1.1

Fixed in: 8.2.1.1

Safe to downgrade to: a release before 8.1.0.0

1. Check installed version

apt-cache policy storage-protect || rpm -q storage-protect || storage-protect --version

2. UPGRADE to 8.2.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade storage-protect

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade storage-protect

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 8.1.0.0 (Debian / Ubuntu)

apt-cache madison storage-protect sudo apt install storage-protect=<VERSION_BEFORE_8.1.0.0> sudo apt-mark hold storage-protect

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

dnf --showduplicates list storage-protect sudo dnf downgrade storage-protect-<VERSION_BEFORE_8.1.0.0> sudo dnf versionlock add storage-protect

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-2026-12628?

storage protect: upgrade to 8.2.1.1. Exact commands for each OS are on this page.

Is CVE-2026-12628 being exploited?

CVE-2026-12628 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-2026-12628 affect?

CVE-2026-12628 affects storage protect. Severity is critical (CVSS 9.1). IBM Storage Protect Client 8.1.0.0 through 8.2.1.0 and IBM Storage Protect Snapshot For Windows 8.1.0.0 through 8.2.1.0 could allow a remote attacker to bypass authentication due to the use of a hardcoded credential in the FlashCopy Manager

How urgent is CVE-2026-12628?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Windows vulnerabilities

Related CVEs

CVE-2026-13473 HIGH 8.1 UPGRADE IBM Storage Protect Client 8.1.0.0 through 8.1.27.0, 8.1.27.1, and 8.2.0.0 through 8.2.1.0 IBM Storage Protect

References

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