How severe is CVE-2021-40695?

CVE-2021-40695 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-40695 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40695?

CVE-2021-40695 affects Moodle. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40695?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-40695 published?

CVE-2021-40695 was published on 2022-09-29 and last updated on 2026-06-17.

CVE-2021-40695

CVE-2021-40695 is a medium-severity vulnerability in Moodle with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Moodle
Published: 2022-09-29
Last modified: 2026-06-17

Description

It was possible for a student to view their quiz grade before it had been released, using a quiz web service.

Frequently asked questions

What is CVE-2021-40695?: It was possible for a student to view their quiz grade before it had been released, using a quiz web service.
How severe is CVE-2021-40695?: CVE-2021-40695 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-40695 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40695?: CVE-2021-40695 affects Moodle. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40695?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40695 published?: CVE-2021-40695 was published on 2022-09-29 and last updated on 2026-06-17.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2043424

Affected products (1)

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*

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