Security readout for executives and security teams
Plain-English summary
SeedDMS installations in the listed 5.1.x and 6.0.x ranges can be abused through CSRF to rename documents when an authenticated user is tricked into visiting a malicious page. The direct business risk is document integrity and workflow disruption, not proven data theft from the supplied sources.
Executive priority
Treat this as a targeted integrity risk for document management environments. Prioritize remediation where SeedDMS supports regulated, customer-facing, legal, or operational document workflows.
Technical view
CVE-2021-35343 is a CSRF issue in SeedDMS /op/op.Ajax.php affecting v5.1.x before 5.1.23 and v6.0.x before 6.0.16. The described impact is unauthorized document name modification through an authenticated victim’s browser. No CVSS, CWE, or vendor advisory detail is included in the source bundle.
Likely exposure
Exposure is limited to organizations running affected SeedDMS versions with authenticated users who can be socially engineered into visiting attacker-controlled content. Internet-facing SeedDMS portals increase practical risk.
Exploitation context
The CVE record describes remote exploitation requiring user interaction and an authenticated victim. The source bundle does not show CISA KEV listing, active exploitation, public exploit reliability, or broader impact beyond editing document names.
Researcher notes
Evidence is sparse: the bundle provides the CVE description and one external write-up reference, but no CVSS vector, CWE mapping, KEV status, or vendor mitigation details. Do not assume confidentiality compromise from the supplied evidence.
Mitigation direction
- Upgrade SeedDMS beyond the affected 5.1.x and 6.0.x version ranges.
- Check SeedDMS vendor guidance for any CSRF-specific remediation notes.
- Restrict SeedDMS access to trusted networks where practical.
- Train users to avoid untrusted links while authenticated to internal tools.
- Monitor for unexpected document rename activity.
Validation and detection
- Inventory SeedDMS deployments and record exact versions.
- Confirm no production instance runs before 5.1.23 or before 6.0.16.
- Review whether /op/op.Ajax.php state-changing actions enforce CSRF protection.
- Check logs or audit trails for unexplained document name changes.
- Verify remediation in a staging environment before production rollout.
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.
CVE-2021-35343 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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://medium.com/%40cyberdivision/cve-2021-35343-c5c298cbb2d4CVE 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.