CVE-2021-36175Network attack vector

Stored script injection via unsanitized metadata fields

Published Oct 6, 2021 · Updated Oct 25, 2024

Stored XSS in Fortinet FortiWeb Manager 6.2.3 and earlier allows remote authenticated users to inject scripts through metadata fields. The affected sections accept name, description, or comments values without neutralizing script markup before rendering the saved content. An authenticated account can plant content that runs when another user views an affected section, allowing unauthorized browser-side actions without service interruption.

CVSS severity4.1
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Fortinet FortiWeb Manager 6.2.3 and earlier allows remote authenticated users to inject scripts through metadata fields. The affected sections accept name, description, or comments values without neutralizing script markup before rendering the saved content. An authenticated account can plant content that runs when another user views an affected section, allowing unauthorized browser-side actions without service interruption.

The record

CVE
CVE-2021-36175
Published
Oct 6, 2021
Updated
Oct 25, 2024
Vendor
Fortinet
Product
FortiWeb Manager
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Oct 25, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=FortiWebManager 6.0.2 6.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fortinet · FortiWeb Managerversion=FortiWebManager 6.0.2 6.2.3

Published CVSS scores

4.1FortinetCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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