Security readout for executives and security teams
Plain-English summary
openSIS 8.0 has a reported SQL injection issue when MySQL or MariaDB is the database. A vulnerable login-related parameter could let an attacker send unintended database queries. The public record does not provide CVSS scoring, affected CPEs, or a confirmed vendor fix.
Executive priority
Prioritize discovery first because severity and fix data are incomplete. Escalate quickly if openSIS 8.0 is internet-facing or contains sensitive operational data, because SQL injection can threaten confidentiality and integrity of database-backed applications.
Technical view
CVE-2021-40353 describes SQL injection through the index.php USERNAME parameter in openSIS 8.0 with MySQL or MariaDB. The CVE notes it may be related to an incomplete fix for CVE-2020-6637. Severity, CWE mapping, and formal affected-product metadata are not supplied.
Likely exposure
Exposure is likely limited to organizations running openSIS 8.0 backed by MySQL or MariaDB, especially if the application is reachable by untrusted users. The bundle does not identify other versions or database engines as affected.
Exploitation context
The record describes attacker capability to issue SQL through a parameter, and a public GitHub reference exists. However, the source bundle does not show CISA KEV listing, active exploitation, or exploitation in the wild.
Researcher notes
Key gaps are missing CVSS, CWE, CPE, and patch details. The incomplete-fix note for CVE-2020-6637 is important for regression analysis. Avoid assuming impact beyond openSIS 8.0 with MySQL or MariaDB unless confirmed by vendor or testing.
Mitigation direction
- Inventory openSIS deployments and identify any version 8.0 instances.
- Confirm whether each instance uses MySQL or MariaDB.
- Check openSIS vendor guidance for fixed versions or supported remediation.
- Restrict access to openSIS login surfaces where business requirements allow.
- Review database and application logs for unusual login-parameter errors or activity.
Validation and detection
- Verify application version from administrative or deployment records.
- Verify configured database engine for each openSIS instance.
- Review index.php authentication handling for safe parameterized database access.
- Check whether CVE-2020-6637 remediation was previously applied and complete.
- Confirm vendor-recommended update or mitigation is present after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Database behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-40353 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.opensis.com/download/englishCVE reference · x_refsource_MISC
- https://github.com/5qu1n7/CVE-2021-40353CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.