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CVE Record

CVE-2021-32585: An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiWAN before 4....

An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiWAN before 4.5.9 may allow an attacker to perform a stored cross-site scripting attack via specifically crafted HTTP requests.

HighCVSS 7.2Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

FortiWAN versions before 4.5.9 contain a stored cross-site scripting flaw. An attacker could send crafted HTTP requests that cause malicious script content to be stored and later rendered in a web page. This can affect confidentiality and integrity, but the sources do not indicate availability impact or confirmed active exploitation.

Executive priority

Treat as a high-priority appliance maintenance issue, especially for internet-reachable management interfaces. It is not listed as KEV in the source bundle, but affected FortiWAN systems should be upgraded promptly because network appliances are high-value targets.

Technical view

CVE-2021-32585 is a CWE-79 improper input neutralization issue in Fortinet FortiWAN before 4.5.9. The CVSS 3.1 score is 7.2, with network attack vector, low complexity, no privileges, no user interaction, changed scope, and low confidentiality and integrity impact.

Likely exposure

Exposure is limited to organizations running Fortinet FortiWAN versions before 4.5.9. Risk is higher where the FortiWAN web interface or management plane is reachable from untrusted networks.

Exploitation context

The provided sources describe crafted HTTP requests enabling stored XSS. KEV is false, and no cited source in the bundle confirms active exploitation. The CVSS vector lists exploit maturity as proof-of-concept, but no weaponized details are provided here.

Researcher notes

The source bundle names FortiWAN before 4.5.9 and describes stored XSS via crafted HTTP requests. It does not provide endpoint specifics, payload details, or evidence of in-the-wild exploitation. Validation should focus on version exposure, management-plane reachability, and Fortinet advisory alignment.

Mitigation direction

  • Inventory FortiWAN deployments and identify versions before 4.5.9.
  • Upgrade affected FortiWAN systems to 4.5.9 or a later vendor-supported release.
  • Restrict FortiWAN web management access to trusted administrative networks.
  • Monitor Fortinet PSIRT guidance for updated workarounds or fixed versions.

Validation and detection

  • Verify FortiWAN version from administrative inventory or the device interface.
  • Confirm management interfaces are not exposed beyond approved networks.
  • Review FortiWAN web or admin logs for unexpected crafted HTTP requests.
  • Confirm remediation status against Fortinet advisory FG-IR-21-078.
Prepared
Confidence
high
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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-2021-32585 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.2 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:P/RL:U/RC:C

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
7.2CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:P/RL:U/RC:C3.92.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.2High
CVSS 3.1 vector shape for CVE-2021-32585Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:P/RL:U/RC:C

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
FortinetFortinet FortiWANFortiWAN before 4.5.9Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.