Security readout for executives and security teams
Plain-English summary
FortiMail versions before 6.4.4 have an administrative interface flaw that can let a logged-in attacker run unauthorized operating system commands. The attacker needs high privileges, but successful abuse could compromise confidentiality, integrity, and availability of the appliance.
Executive priority
Treat as a high-priority appliance update where FortiMail is in use. The privilege requirement lowers likelihood, but impact is severe if an admin account or management path is compromised.
Technical view
CVE-2021-24015 is an OS command injection issue in the FortiMail administrative interface. The CVSS 3.1 vector is AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, indicating network reachability, low complexity, required high privileges, no user interaction, and high impact.
Likely exposure
Organizations running Fortinet FortiMail before 6.4.4 are exposed, especially where the administrative interface is reachable by administrators or management networks.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Abuse requires authenticated high-privilege access to the FortiMail administrative interface.
Researcher notes
Evidence is limited to the CVE record and Fortinet advisory reference. The key exposure condition is FortiMail before 6.4.4 with reachable administrative interface and attacker-controlled authenticated privileged access.
Mitigation direction
- Upgrade FortiMail to 6.4.4 or later per vendor guidance.
- Restrict administrative interface access to trusted management networks.
- Review administrator accounts and remove unnecessary privileged access.
- Monitor FortiMail administrative activity for unexpected configuration or system changes.
Validation and detection
- Inventory FortiMail appliances and confirm running versions.
- Verify no FortiMail instance remains below 6.4.4.
- Confirm administrative interfaces are not broadly network-accessible.
- Review logs for suspicious authenticated administrative requests or changes.
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
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CVE-2021-24015 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
- High
- CVSS
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://fortiguard.com/advisory/FG-IR-21-021CVE reference · x_refsource_CONFIRM
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.