Security readout for executives and security teams
Plain-English summary
CVE-2021-43464 is reported as a remote code execution flaw in Subrion CMS 4.2.1. Modified data in a background field may be executed through eval(), which could let an attacker run code if they can reach and trigger the vulnerable path.
Executive priority
Treat this as a priority inventory and remediation item if Subrion CMS 4.2.1 is in use, because RCE in a CMS can affect website integrity and hosting systems. Urgency is lower if the product is absent.
Technical view
The CVE description says Subrion CMS 4.2.1 executes modified background-field data through eval(). The public bundle does not provide CVSS, CWE, authentication requirements, exploit maturity, or confirmed patched versions.
Likely exposure
Exposure is most likely limited to organizations running Subrion CMS 4.2.1. The sources do not identify broader affected versions or products, so teams should validate their exact deployed version and configuration.
Exploitation context
The CVE is not listed as KEV in the provided bundle. No cited source confirms active exploitation. The available evidence describes the vulnerable behavior, but not attacker prerequisites or real-world campaign activity.
Researcher notes
The record is sparse and contains no CVSS, CWE, patch, or exploit status. Analysis should avoid assuming authentication state, affected version range beyond 4.2.1, or available fixes without vendor confirmation.
Mitigation direction
- Identify any Subrion CMS 4.2.1 deployments.
- Check the vendor issue and release guidance for fixed versions.
- Restrict CMS administrative access to trusted users and networks.
- Review content-editing permissions for fields that can affect presentation code.
- Monitor for unexpected changes to background or theme-related fields.
Validation and detection
- Confirm whether Subrion CMS 4.2.1 is present in production or staging.
- Review CMS audit logs for recent background-field modifications.
- Inspect vendor guidance for version-specific remediation status.
- Verify only authorized users can modify theme or background settings.
- Check whether exposed instances are internet-accessible.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-43464 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://github.com/intelliants/subrion/issues/888CVE 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.