Security readout for executives and security teams
Plain-English summary
CVE-2021-36170 can expose FortiCloud trial-license credentials stored in cleartext on affected FortiAnalyzerVM and FortiManagerVM appliances. The attacker must already have high-privilege local authenticated access, so this is mainly a credential-protection and insider-risk issue rather than an internet-scale emergency.
Executive priority
Treat as a low-severity hygiene item unless affected appliances are shared, weakly governed, or administered by many privileged users. Prioritize during normal patch cycles, with faster action if FortiCloud credentials are sensitive or reused.
Technical view
Fortinet describes a CWE-200 information disclosure flaw affecting FortiAnalyzerVM and FortiManagerVM 7.0.0 and 6.4.6 and below. With local access, low complexity, and high privileges, an authenticated attacker may read cleartext FortiCloud credentials used to activate a trial license. CVSS v3.1 score is 3.2.
Likely exposure
Exposure is limited to organizations running affected FortiAnalyzerVM or FortiManagerVM versions where FortiCloud credentials were used for trial license activation and highly privileged local users exist.
Exploitation context
The provided bundle says this is not in KEV and gives no evidence of active exploitation. The CVSS vector requires local access and high privileges, reducing broad external exploitability.
Researcher notes
The main uncertainty is remediation detail: the supplied bundle references Fortinet FG-IR-21-112 but does not include fixed-release text. Analysis is limited to the provided CVE fields, CVSS vector, affected-version statement, and KEV=false signal.
Mitigation direction
- Review Fortinet advisory FG-IR-21-112 for official fixed versions and upgrade guidance.
- Upgrade affected FortiAnalyzerVM and FortiManagerVM systems according to vendor guidance.
- Restrict high-privilege local access to affected appliances until remediation is complete.
- Rotate FortiCloud trial-license credentials if exposure is suspected.
Validation and detection
- Inventory FortiAnalyzerVM and FortiManagerVM versions across the environment.
- Flag FortiManager 7.0.0, 6.4.6 and below, and FortiAnalyzer 7.0.0, 6.4.6 and below.
- Confirm whether trial licensing used FortiCloud credentials on affected appliances.
- Review privileged local account access for affected systems.
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-2021-36170 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
- Low
- CVSS
- 3.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N/E:F/RL:O/RC:C
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:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N/E:F/RL:O/RC:C1.51.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.2LowVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N/E:F/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://fortiguard.com/advisory/FG-IR-21-112CVE 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.
