CVE-2021-32522: Improper restriction of excessive authentication attempts vulnerability in QSAN Storage Manager, XEVO, SANOS a

Q: How do I fix CVE-2021-32522?

sanos: upgrade to newer than 2.0.0; storage manager: upgrade to newer than 3.3.1; xevo: upgrade to 1.2.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-32522 being exploited?

CVE-2021-32522 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-2021-32522 affect?

CVE-2021-32522 affects sanos, storage manager, xevo. Severity is critical (CVSS 9.8). Improper restriction of excessive authentication attempts vulnerability in QSAN Storage Manager, XEVO, SANOS allows remote attackers to discover users’ credentials and obtain access via a brute force attack. Suggest contacting with QSAN and

Q: How urgent is CVE-2021-32522?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADEUPGRADEUPGRADE

CVE-2021-32522 is a critical-severity flaw (CVSS 9.8) affecting sanos, storage manager, xevo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper restriction of excessive authentication attempts vulnerability in QSAN Storage Manager, XEVO, SANOS allows remote attackers to discover users’ credentials and obtain access via a brute force attack. Suggest contacting with QSAN and refer to recommendations in QSAN Document.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-307
Published	2021-07-07
Last modified	2026-06-17

Publisher (CNA): TWCERT/CC · Vendor: qsan

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

Am I affected?

Timeline

2021-07-07 14:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

qsan sanos UPGRADE

Affected: <= 2.0.0

Fixed in: newer than 2.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.0.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sanos

Note

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

qsan storage manager UPGRADE

Affected: <= 3.3.1

Fixed in: newer than 3.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.3.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade storage-manager

Note

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

qsan xevo UPGRADE

Affected: < 1.2.0

Fixed in: 1.2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.2.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xevo

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-2021-32522?

sanos: upgrade to newer than 2.0.0; storage manager: upgrade to newer than 3.3.1; xevo: upgrade to 1.2.0. Exact commands for each OS are on this page.

Is CVE-2021-32522 being exploited?

CVE-2021-32522 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-2021-32522 affect?

CVE-2021-32522 affects sanos, storage manager, xevo. Severity is critical (CVSS 9.8). Improper restriction of excessive authentication attempts vulnerability in QSAN Storage Manager, XEVO, SANOS allows remote attackers to discover users’ credentials and obtain access via a brute force attack. Suggest contacting with QSAN and

How urgent is CVE-2021-32522?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-32535 CRITICAL 9.8 UPGRADE The vulnerability of hard-coded default credentials in QSAN SANOS allows unauthenticated remote attackers to o
CVE-2021-32534 CRITICAL 9.8 UPGRADE QSAN SANOS factory reset function does not filter special parameters
CVE-2021-32533 CRITICAL 9.8 UPGRADE The QSAN SANOS setting page does not filter special parameters
CVE-2021-32529 CRITICAL 9.8 UPGRADE UPGRADE Command injection vulnerability in QSAN XEVO, SANOS allows remote unauthenticated attackers to execute arbitra
CVE-2021-32521 HIGH 7.3 UPGRADE UPGRADE Use of MAC address as an authenticated password in QSAN Storage Manager, XEVO, SANOS allows local attackers to

References

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