Security readout for executives and security teams
Plain-English summary
This vulnerability lets someone who can change EyesOfNetwork’s Cacti mail settings turn the sendmail path field into command execution. If exposed to an attacker, the monitoring server could be taken over. The public record does not provide a CVSS score or confirmed exploitation.
Executive priority
Prioritize remediation for any production monitoring server, especially if administrative interfaces are reachable beyond a trusted management network. Monitoring platforms often hold sensitive operational access, so compromise can support broader intrusion.
Technical view
EyesOfNetwork before 2021-07-07 is reported vulnerable to remote code execution in the Cacti mail options configuration page. The sendmail application location field, normally /usr/sbin/sendmail, can be abused so arbitrary commands execute when the configuration’s send test mail action runs.
Likely exposure
Likely exposure is EyesOfNetwork deployments older than 2021-07-07 where users can access the Cacti mail options configuration page. The sources do not identify exact package versions, authentication requirements, or internet-facing prerequisites.
Exploitation context
CISA KEV is false in the provided bundle, and no cited source confirms active exploitation. Exploitation appears tied to modifying the sendmail path and triggering the test mail function, but the available sources omit access-control details.
Researcher notes
The record lacks CVSS, CWE, CPE, exact affected versions, and exploit-status detail. Treat impact as potentially severe because the described behavior is command execution, but keep conclusions bounded to EyesOfNetwork before 2021-07-07.
Mitigation direction
- Identify any EyesOfNetwork deployment older than 2021-07-07.
- Check EyesOfNetwork vendor guidance for the fixed release or advisory instructions.
- Upgrade to a vendor-confirmed fixed build dated 2021-07-07 or later.
- Restrict access to EyesOfNetwork and Cacti configuration pages to trusted administrators.
- Review mail configuration values for unexpected sendmail path changes.
Validation and detection
- Inventory EyesOfNetwork versions and build dates across monitoring systems.
- Confirm whether the Cacti mail options configuration page is reachable.
- Verify only authorized administrators can change mail configuration settings.
- Review audit logs for mail configuration changes and test mail activity.
- Check the configured sendmail path for unexpected or nonstandard values.
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-2021-40643 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://eyesofnetwork.com/CVE reference · x_refsource_MISC
- https://www.eyesofnetwork.com/en/news/vulnerabilite-cactiCVE 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.