CVE-2021-41691
Critical
Published: 24 June 2025
Published
24 June 2025
Modified
09 July 2025
KEV Added
—
Patch
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CVSS Score v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0330
87.5th percentile
Risk Priority
22
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-41691 is a critical-severity SQL Injection (CWE-89) vulnerability in Os4Ed Opensis. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 12.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-28703
Vulnerability details
A SQL injection vulnerability exists in OS4Ed Open Source Information System Community v8.0 via the "student_id" and "TRANSFER{SCHOOL]" parameters in POST request sent to /TransferredOutModal.php.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
os4ed
opensis
8.0
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.