How severe is CVE-2021-32534?

CVE-2021-32534 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-32534 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32534?

CVE-2021-32534 affects Qsan Sanos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32534?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-32534 published?

CVE-2021-32534 was published on 2021-07-07 and last updated on 2026-06-17.

CVE-2021-32534

CVE-2021-32534 is a critical-severity vulnerability in Qsan Sanos with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Qsan Sanos
Published: 2021-07-07
Last modified: 2026-06-17

Description

QSAN SANOS factory reset function does not filter special parameters. Remote attackers can use this vulnerability to inject and execute arbitrary commands without permissions. The referred vulnerability has been solved with the updated version of QSAN SANOS v2.1.0.

Frequently asked questions

What is CVE-2021-32534?: QSAN SANOS factory reset function does not filter special parameters. Remote attackers can use this vulnerability to inject and execute arbitrary commands without permissions. The referred vulnerability has been solved with the updated version of QSAN SANOS v2.1.0.
How severe is CVE-2021-32534?: CVE-2021-32534 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-32534 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32534?: CVE-2021-32534 affects Qsan Sanos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32534?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-32534 published?: CVE-2021-32534 was published on 2021-07-07 and last updated on 2026-06-17.

References

https://www.twcert.org.tw/tw/cp-132-4891-94707-1.html

Affected products (1)

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

More vulnerabilities in Qsan Sanos

CVE-2021-32535 — Critical (CVSS 9.8): The vulnerability of hard-coded default credentials in QSAN SANOS allows unauthenticated remote attackers to obtain…
CVE-2021-32533 — Critical (CVSS 9.8): The QSAN SANOS setting page does not filter special parameters. Remote attackers can use this vulnerability to inject…
CVE-2021-32529 — Critical (CVSS 9.8): Command injection vulnerability in QSAN XEVO, SANOS allows remote unauthenticated attackers to execute arbitrary…
CVE-2021-32522 — Critical (CVSS 9.8): Improper restriction of excessive authentication attempts vulnerability in QSAN Storage Manager, XEVO, SANOS allows…
CVE-2021-32519 — Critical (CVSS 9.8): Use of password hash with insufficient computational effort vulnerability in QSAN Storage Manager, XEVO, SANOS allows…
CVE-2021-32521 — High (CVSS 7.3): Use of MAC address as an authenticated password in QSAN Storage Manager, XEVO, SANOS allows local attackers to escalate…

All CVEs affecting Qsan Sanos →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-19188 — Critical (CVSS 10.0): A critical OS command injection vulnerability has been identified in the Haiwell IoT Cloud HMI Gateway product. The…
CVE-2026-48362 — Critical (CVSS 10.0): ColdFusion is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')…
CVE-2026-16812 — Critical (CVSS 10.0): VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access…
CVE-2026-6516 — Critical (CVSS 10.0): Zohocorp ManageEngine ADAudit Plus versions before 8606 are affected by Unauthenticated Remote code execution due to…
CVE-2026-46339 — Critical (CVSS 10.0): 9Router is an AI router & token saver. From 0.4.30 until 0.4.37, 9Router's src/proxy.js middleware did not protect…
CVE-2026-59726 — Critical (CVSS 10.0): Ruflo is an agent meta-harness for Claude Code and Codex. Prior to 3.16.3, ruflo's default docker-compose deployment…

Browse all CWE-78 (OS Command Injection) vulnerabilities →