CVE-2021-32535: The vulnerability of hard-coded default credentials in QSAN SANOS allows unauthenticated remote attackers to o

Q: How do I fix CVE-2021-32535?

sanos: upgrade to 2.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-32535 being exploited?

CVE-2021-32535 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-2021-32535 affect?

CVE-2021-32535 affects sanos. Severity is critical (CVSS 9.8). The vulnerability of hard-coded default credentials in QSAN SANOS allows unauthenticated remote attackers to obtain administrator’s permission and execute arbitrary functions. The referred vulnerability has been solved with the updated vers

Q: How urgent is CVE-2021-32535?

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

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-32535 is a critical-severity flaw (CVSS 9.8) affecting sanos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The vulnerability of hard-coded default credentials in QSAN SANOS allows unauthenticated remote attackers to obtain administrator’s permission and execute arbitrary functions. The referred vulnerability has been solved with the updated version of QSAN SANOS v2.1.0.

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 27%)
CISA exploited list	No
Weakness	CWE-798
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: < 2.1.0

Fixed in: 2.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.1.0 (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.

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-2021-32535?

sanos: upgrade to 2.1.0. Exact commands for each OS are on this page.

Is CVE-2021-32535 being exploited?

CVE-2021-32535 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-2021-32535 affect?

CVE-2021-32535 affects sanos. Severity is critical (CVSS 9.8). The vulnerability of hard-coded default credentials in QSAN SANOS allows unauthenticated remote attackers to obtain administrator’s permission and execute arbitrary functions. The referred vulnerability has been solved with the updated vers

How urgent is CVE-2021-32535?

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

Related CVEs

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-2021-32522 CRITICAL 9.8 UPGRADE UPGRADE Improper restriction of excessive authentication attempts vulnerability in QSAN Storage Manager, XEVO, SANOS a
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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