How severe is CVE-2025-3645?

CVE-2025-3645 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-2025-3645 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3645?

CVE-2025-3645 affects Moodle. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3645?

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

Does CVE-2025-3645 have an EU (EUVD) identifier?

Yes. CVE-2025-3645 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12516.

When was CVE-2025-3645 published?

CVE-2025-3645 was published on 2025-04-25 and last updated on 2026-06-17.

CVE-2025-3645

CVE-2025-3645 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. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12516
Weakness: CWE-863
Affected product: Moodle
Published: 2025-04-25
Last modified: 2026-06-17

Description

A flaw was found in Moodle. Insufficient capability checks in a messaging web service allowed users to view other users' names and online statuses.

Frequently asked questions

What is CVE-2025-3645?: A flaw was found in Moodle. Insufficient capability checks in a messaging web service allowed users to view other users' names and online statuses.
How severe is CVE-2025-3645?: CVE-2025-3645 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-2025-3645 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3645?: CVE-2025-3645 affects Moodle. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3645?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-3645 have an EU (EUVD) identifier?: Yes. CVE-2025-3645 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12516.
When was CVE-2025-3645 published?: CVE-2025-3645 was published on 2025-04-25 and last updated on 2026-06-17.

References

Affected products (1)

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

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