CVE-2025-62397 | Moodle: router produces json instead of 404 error for invalid course id

The router’s inconsistent response to invalid course IDs allowed attackers to infer which course IDs exist, potentially aiding reconnaissance.

Published: 2025-10-23 Last update: 2025-11-14 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-62397 is rated Low Risk (26.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.23%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-62397

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.05% 0.23% +0.18%
2 2026-05-19 0.03% 0.05% +0.02%
3 2026-03-14 — 0.03% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-62397

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2025-62397

OS Trackers for CVE-2025-62397

vendor priority summary link
ubuntu medium CVE-2025-62397 medium priority: Ubuntu including 1 source packages (moodle), 7 status rows across 7 suites (bionic, jammy, noble, plucky, questing, upstream, xenial): DNE 4, needs-triage 3. https://ubuntu.com/security/CVE-2025-62397

Affected software / configurations for CVE-2025-62397

Vendor Product Version Raw CPE
moodle moodle >= 5.0.0, < 5.0.3 cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*

References for CVE-2025-62397

cvelogic Threat Intelligence