CVE-2021-36178Network attack vector

Authenticated credential disclosure via WebUI configuration page

Published Oct 6, 2021 · Updated Oct 25, 2024

Insufficient credential protection in FortiSDN Connector 1.1.7 and earlier allows remote authenticated users to read device credentials. The WebUI configuration page returns stored credentials for connected third-party devices to an authenticated account, but Fortinet has not disclosed the underlying implementation error. Access to the WebUI is required, and the reported consequence is disclosure of third-party device credentials without integrity or availability impact.

CVSS severity6.5
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient credential protection in FortiSDN Connector 1.1.7 and earlier allows remote authenticated users to read device credentials. The WebUI configuration page returns stored credentials for connected third-party devices to an authenticated account, but Fortinet has not disclosed the underlying implementation error. Access to the WebUI is required, and the reported consequence is disclosure of third-party device credentials without integrity or availability impact.

The record

CVE
CVE-2021-36178
Published
Oct 6, 2021
Updated
Oct 25, 2024
Vendor
Fortinet
Product
FortiSDN Connector
Classifications
CWE-522, T1555
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=FortiSDNConnector 1.1.7, 1.1.6, 1.1.5, 1.1.4, 1.1.3, 1.1.2, 1.1.1, 1.1.0, 1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fortinet · FortiSDN Connectorversion=FortiSDNConnector 1.1.7, 1.1.6, 1.1.5, 1.1.4, 1.1.3, 1.1.2, 1.1.1, 1.1.0, 1.0.0

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.2FortinetCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:F/RL:X/RC:X
4.3FortinetCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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-522Insufficiently Protected Credentials
T1555Credentials from Password Stores

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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