CVE-2021-41691Public exploitNetwork attack vector

Database disclosure via unparameterized transfer queries

Published Jun 24, 2025 · Updated Jun 25, 2025

SQL injection in OS4Ed openSIS Community 8.0 allows remote attackers to read all database tables through crafted POST parameters. TransferredOutModal.php concatenates student_id and TRANSFER[SCHOOL] directly into SELECT statements passed to DBQuery without parameterization. No credentials or user interaction are required, and the demonstrated consequence is disclosure of the application database.

CVSS severity9.8
Critical
EPSS probability1.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in OS4Ed openSIS Community 8.0 allows remote attackers to read all database tables through crafted POST parameters. TransferredOutModal.php concatenates student_id and TRANSFER[SCHOOL] directly into SELECT statements passed to DBQuery without parameterization. No credentials or user interaction are required, and the demonstrated consequence is disclosure of the application database.

The record

CVE
CVE-2021-41691
Published
Jun 24, 2025
Updated
Jun 25, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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