What is the CVSS score of CVE-2021-32521?

CVE-2021-32521 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.7%.

Storage Manager CVE-2021-32521

CRITICAL

Use of Hard-coded Password (CWE-259)

2021-07-07 twcert@cert.org.tw

Authentication Bypass Storage Manager Sanos Xevo Qsan

9.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-259 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication No hard-coded passwords MITRE ATT&CK 1 technique across 1 tactic: Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

No patch listed yet 0.7% exploitation probability (EPSS)

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AnalysisAI

Use of MAC address as an authenticated password in QSAN Storage Manager, XEVO, SANOS allows local attackers to escalate privileges. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-259. Use of MAC address as an authenticated password in QSAN Storage Manager, XEVO, SANOS allows local attackers to escalate privileges. Suggest contacting with QSAN and refer to recommendations in QSAN Document. Affected products include: Qsan Sanos, Qsan Storage Manager, Qsan Xevo.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

Use of MAC address as an authenticated password in QSAN Storage Manager, XEVO, SANOS allows local attackers to escalate privileges. Suggest contacting with QSAN and refer to recommendations in QSAN Document.

Threat Intelligence Overview

EPSS Score

0.7%

Top 51% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC No

EPSS 0.7%

Patch available No

Active threat No

Deciding rule

CRITICAL severity

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +49

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:qsan:sanos:*:*:*:*:*:*:*:*

cpe:2.3:a:qsan:storage_manager:*:*:*:*:*:*:*:*

cpe:2.3:a:qsan:xevo:*:*:*:*:*:*:*:*

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The AuthenticationFilter class in SolarWinds Storage Manager allows remote attackers to upload and execute arbitrary scr

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8.3 May 06

Dell Storage Center - Dell Storage Manager, version(s) 20.1.20, contain(s) an Improper Authentication vulnerability. Rat

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Same weakness CWE-259 – Use of Hard-coded Password

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CVE-2025-57788 MEDIUM POC

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CVE-2026-20316 MEDIUM POC

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CVE-2012-5862 CRITICAL POC

10.0

CVE-2024-42639 CRITICAL POC

9.8

CVE-2024-36526 CRITICAL POC

9.8

CVE-2024-38902 CRITICAL POC

9.8

CVE-2023-5222 CRITICAL POC

9.8

CVE-2023-3237 CRITICAL POC

9.8

Same technique Authentication Bypass

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CVE-2015-3306 CRITICAL POC

10.0

CVE-2023-22515 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2013-2465 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2022-40684 CRITICAL POC

9.8

CVE-2025-61882 CRITICAL POC

9.8

CVE-2024-0012 CRITICAL POC

9.3

References

Advisories & patches

REF https://www.twcert.org.tw/tw/cp-132-4877-7b696-1.html

Search Externally

GitHub PoC

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