CVE-2021-40693
CVE-2021-40693 is a medium-severity vulnerability in Moodle with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 1% (53rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Moodle
- Published:
- Last modified:
Description
An authentication bypass risk was identified in the external database authentication functionality, due to a type juggling vulnerability.
Frequently asked questions
- What is CVE-2021-40693?
- An authentication bypass risk was identified in the external database authentication functionality, due to a type juggling vulnerability.
- How severe is CVE-2021-40693?
- CVE-2021-40693 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2021-40693 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-40693?
- CVE-2021-40693 affects Moodle. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-40693?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-40693 published?
- CVE-2021-40693 was published on 2022-09-29 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
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