How severe is CVE-2021-21597?

CVE-2021-21597 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over physical access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21597 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21597?

CVE-2021-21597 primarily affects Dell Wyse Thinos. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-21597?

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

When was CVE-2021-21597 published?

CVE-2021-21597 was published on 2021-08-10 and last updated on 2026-06-17.

CVE-2021-21597

CVE-2021-21597 is a high-severity vulnerability in Dell Wyse Thinos with a CVSS 3.x base score of 7.2. 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-532.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 2.1
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
Affected product: Dell Wyse Thinos
Published: 2021-08-10
Last modified: 2026-06-17

Description

Dell Wyse ThinOS, version 9.0, contains a Sensitive Information Disclosure Vulnerability. An authenticated malicious user with physical access to the system could exploit this vulnerability to read sensitive information written to the log files.

Frequently asked questions

What is CVE-2021-21597?: Dell Wyse ThinOS, version 9.0, contains a Sensitive Information Disclosure Vulnerability. An authenticated malicious user with physical access to the system could exploit this vulnerability to read sensitive information written to the log files.
How severe is CVE-2021-21597?: CVE-2021-21597 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over physical access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21597 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21597?: CVE-2021-21597 primarily affects Dell Wyse Thinos. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-21597?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-21597 published?: CVE-2021-21597 was published on 2021-08-10 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/000189543

Affected products (3)

cpe:2.3:o:dell:wyse_thinos:9.0:*:*:*:*:*:*:*
cpe:2.3:o:dell:wyse_thinos:9.1:*:*:*:*:*:*:*
cpe:2.3:o:dell:wyse_thinos:9.1:mr1:*:*:*:*:*:*

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