Is CVE-2021-37628 in the CISA KEV catalog?

No. CVE-2021-37628 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-37628?

CVE-2021-37628 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-37628?

CVE-2021-37628 has an EPSS score of 2.02% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-37628?

Upgrade richdocuments to 4.2.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-37628

HIGHEPSS 79th pctl

7.5

CVSS v3

NVD

Description

Nextcloud Richdocuments is an open source collaborative office suite. In affected versions the File Drop features ("Upload Only" public link shares in Nextcloud) can be bypassed using the Nextcloud Richdocuments app. An attacker was able to read arbitrary files in such a share. It is recommended that the Nextcloud Richdocuments is upgraded to 3.8.4 or 4.2.1. If upgrading is not possible then it is recommended to disable the Richdocuments application.

CWE-639Authorization Bypass Through User-Controlled Key

How to fix

Remediation Available

richdocumentsNVD

Affected:>= 4.0.0, < 4.2.1Fixed in:4.2.1CVE-2021-37628derived 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 RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

2.02%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory2

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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.