Is CVE-2021-29083 in the CISA KEV catalog?

No. CVE-2021-29083 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-29083?

CVE-2021-29083 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2021-29083?

CVE-2021-29083 has an EPSS score of 2.62% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-29083?

Upgrade diskstation manager to 6.2.3-25426-3 or later.

CVE & CISA-KEV Catalog

CVE-2021-29083

HIGHEPSS 84th pctl

7.2

CVSS v3

NVD

Description

Improper neutralization of special elements used in an OS command in SYNO.Core.Network.PPPoE in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote authenticated users to execute arbitrary code via realname parameter.

CWE-78OS Command Injection

How to fix

Remediation Available

diskstation managerNVD

Affected:< 6.2.3-25426-3Fixed in:6.2.3-25426-3CVE-2021-29083derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

2.62%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Vendor Advisory1

synology.com

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2014-6271	Critical	9.8	100%	KEV	Fix
CVE-2019-16920	Critical	9.8	100%	KEV	-
CVE-2022-44877	Critical	9.8	100%	KEV	Fix
CVE-2020-8515	Critical	9.8	100%	KEV	-
CVE-2020-9054	Critical	9.8	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-01-14.