CVE-2021-20184

Q: How do I fix CVE-2021-20184?

Upgrade moodle to 3.10.1 or later.

Q: Is CVE-2021-20184 being actively exploited?

Not that we know of. CVE-2021-20184 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.72% is the estimated probability that it will be exploited in the next 30 days. That is higher than 51% of all scored CVEs.

Q: How severe is CVE-2021-20184?

CVE-2021-20184 has a CVSS v3 base score of 4.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-20184 affect?

Published advisories record a fix for moodle (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

4.3

CVSS v3

NVD

Description

It was found in Moodle before version 3.10.1, 3.9.4 and 3.8.7 that a insufficient capability checks in some grade related web services meant students were able to view other students grades.

CWE-354

How to fix

Remediation Available

moodleNVD

Affected:>= 3.10.0, < 3.10.1Fixed in:3.10.1CVE-2021-20184derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.72%probability of exploitation in 30 days

51stpercentile

Moderate risk: more likely to be exploited than 51% of all known CVEs.

References

Patch1

moodle.org

Related Vulnerabilities

Other CWE-354 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-48795	Medium	5.9	93%	-	Fix
CVE-2019-1166	Medium	5.9	68%	-	-
CVE-2024-3596	Critical	9.0	15%	-	Fix
CVE-2020-26141	Medium	6.5	3.1%	-	Fix
CVE-2020-25862	High	7.5	2.4%	-	Fix
CVE-2020-8838	Medium	6.4	1.6%	-	-

Common questions

How do I fix CVE-2021-20184?

Upgrade moodle to 3.10.1 or later.

Is CVE-2021-20184 being actively exploited?

Not that we know of. CVE-2021-20184 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.72% is the estimated probability that it will be exploited in the next 30 days. That is higher than 51% of all scored CVEs.

How severe is CVE-2021-20184?

CVE-2021-20184 has a CVSS v3 base score of 4.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-20184 affect?

Published advisories record a fix for moodle (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2021-20184

Markdown

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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.