Is CVE-2021-32654 in the CISA KEV catalog?

No. CVE-2021-32654 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-32654?

CVE-2021-32654 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2021-32654?

CVE-2021-32654 has an EPSS score of 1.85% (76th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-32654?

Upgrade nextcloud server to 21.0.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-32654

HIGHEPSS 76th pctl

8.1

CVSS v3

NVD

Description

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to receive write/read privileges on any Federated File Share. Since public links can be added as federated file share, this can also be exploited on any public link. Users can upgrade to patched versions (19.0.11, 20.0.10 or 21.0.2) or, as a workaround, disable federated file sharing.

CWE-639Authorization Bypass Through User-Controlled Key

How to fix

Remediation Available

nextcloud serverNVD

Affected:>= 21.0.0, < 21.0.2Fixed in:21.0.2CVE-2021-32654derived 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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.85%probability of exploitation in 30 days

76thpercentile

Elevated risk: more likely to be exploited than 76% of all known CVEs.

References

Third-Party Advisory3

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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 2024-11-21.