No exploitation reportedFix available

CVE-2020-25629

Q: Is CVE-2020-25629 actively exploited?

Active exploitation of CVE-2020-25629 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-25629?

CVE-2020-25629 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2020-12-08
Fixed in3.9.2 · 3.8.5 · 3.7.8 · 3.5.14
WeaknessCWE-284 · CWE-862

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was found in Moodle where users with "Log in as" capability in a course context (typically, course managers) may gain access to some site administration capabilities by "logging in as" a System manager. This affects 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions. This is fixed in 3.9.2, 3.8.5, 3.7.8 and 3.5.14.

Timeline

dates in UTC

2020-12-0801:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-25629?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-25629?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Moodle

Branch	Affected	Fixed in	Source
3.9	≥ 3.9.0, < 3.9.2	3.9.2	NVD
3.8	≥ 3.8.0, < 3.8.5	3.8.5	NVD
3.7	≥ 3.7.0, < 3.7.8	3.7.8	NVD
3.5	≥ 3.5.0, < 3.5.14	3.5.14	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Moodle to 3.9.2 · 3.8.5 · 3.7.8 · 3.5.14

Advisories and patches

moodle.orgPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.06.5read 2026-10-23
CNAweakness (CWE)CWE-284read 2026-10-23
NVDweakness (CWE)CWE-862read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2020-12-08
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-25629?

Is CVE-2020-25629 actively exploited?

Active exploitation of CVE-2020-25629 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-25629?

CVE-2020-25629 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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