Security readout for executives and security teams
Plain-English summary
FortiPortal versions before 6.0.6 have multiple web interface resource-consumption flaws. The provided description says a single low-privileged user could cause denial of service by sending multiple HTTP requests, potentially disrupting portal availability. The bundle does not identify data theft or active exploitation.
Executive priority
Treat this as a moderate availability risk. It is not listed as known exploited in the bundle, but exposed FortiPortal instances before 6.0.6 should be upgraded or access-restricted promptly.
Technical view
CVE-2021-36176 affects Fortinet FortiPortal before 6.0.6. The issue is described as multiple uncontrolled resource consumption vulnerabilities in the web interface. Source metadata is partly inconsistent: the description says low-privileged DoS, while the supplied CVSS vector lists PR:N, UI:R, and A:N.
Likely exposure
Exposure is limited to organizations running Fortinet FortiPortal before 6.0.6, especially where the web interface is reachable by users or networks that include low-privileged accounts.
Exploitation context
The bundle marks KEV as false, so there is no supplied evidence of known active exploitation. The CVSS temporal metric includes E:P, suggesting proof-of-concept maturity, but no exploit details are provided in the sources.
Researcher notes
Focus validation on version exposure and reachability of the FortiPortal web interface. The source bundle lacks CWE detail and has CVSS-description inconsistencies, so avoid overinterpreting confidentiality, integrity, or exploitability beyond the cited records.
Mitigation direction
- Identify all FortiPortal deployments and their versions.
- Upgrade FortiPortal to 6.0.6 or later if confirmed by Fortinet guidance.
- Restrict web interface access to trusted administrative networks where feasible.
- Review Fortinet advisory FG-IR-21-100 for official remediation details.
Validation and detection
- Confirm FortiPortal version is 6.0.6 or later.
- Check whether the FortiPortal web interface is internet-accessible.
- Review access logs for unusual repeated HTTP request patterns.
- Verify low-privileged accounts cannot impact portal availability.
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-2021-36176 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
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:U/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:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:U/RC:C2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:U/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://fortiguard.com/advisory/FG-IR-21-100CVE 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.