Security readout for executives and security teams
Plain-English summary
CVE-2021-24017 is an improper authentication issue in Fortinet FortiManager. A lower-privileged attacker could use crafted requests to assign arbitrary Policy and Object modules. This can affect management integrity and availability, but the provided sources do not show data theft or active exploitation.
Executive priority
Prioritize remediation in normal patch cycles, escalating if FortiManager is internet-exposed or shared with many lower-privileged users. This is a management-plane integrity issue, not confirmed as actively exploited in the supplied sources.
Technical view
Affected FortiManager versions are 6.4.3 and below and 6.2.6 and below. The CVSS 3.1 score is 5.4 with network attack vector, low complexity, low privileges required, no user interaction, and low integrity and availability impact.
Likely exposure
Organizations running FortiManager 6.4.3 or earlier in 6.4, or 6.2.6 or earlier in 6.2, are potentially exposed. Risk is higher where FortiManager is reachable by lower-privileged authenticated users or broad management networks.
Exploitation context
The CVSS vector includes E:H, but the bundle marks KEV false and provides no cited evidence of active exploitation. Treat exploitability as credible for authenticated attackers, not confirmed in-the-wild activity.
Researcher notes
The record does not provide CWE mapping, exploit details, or fixed version text in the bundle. Analysis is limited to CVE metadata, CVSS, affected version ranges, KEV status, and Fortinet advisory reference.
Mitigation direction
- Check Fortinet advisory FG-IR-20-189 for fixed versions and vendor guidance.
- Upgrade affected FortiManager deployments using Fortinet-supported release paths.
- Restrict FortiManager access to trusted management networks and VPNs.
- Review lower-privileged accounts with FortiManager access.
- Monitor for unexpected Policy and Object module assignments.
Validation and detection
- Inventory FortiManager versions and compare against 6.4.3 and 6.2.6 thresholds.
- Confirm FortiManager is not broadly reachable from untrusted networks.
- Review FortiManager audit logs for unauthorized module assignment changes.
- Validate user roles and remove unnecessary low-privilege access.
- Document remediation status for each FortiManager instance.
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-2021-24017 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
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:H/RL:X/RC:X
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:L/UI:N/S:U/C:N/I:L/A:L/E:H/RL:X/RC:X2.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:H/RL:X/RC:X
Source materials
- CVE List V5 sourceCVE List V5
- https://fortiguard.com/advisory/FG-IR-20-189CVE 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.