Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability.

published 2021-01-04 5y ago modified 2026-06-17 4mo ago also EUVD-2020-21859

cvss: 10.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits: 0; none known

Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability to gain access to the sensitive information on the local network, leading to the potential compromise of impacted thin clients.

Patch / fix

fixed in 1

Dell Wyse Proprietary OS (ThinOS) 8.6

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Exploit prediction

1.82% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	8.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

Dell Wyse Proprietary OS (ThinOS)

Classification

Weakness

CWE-276 Incorrect Default Permissions

References

dell.com /support/kbdoc/en-us/000180768/dsa-2020-281
vendor-advisory

Sources

CVE List CVE-2020-29491
NVD CVE-2020-29491

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