How severe is CVE-2021-36178?

CVE-2021-36178 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-36178 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36178?

CVE-2021-36178 affects Fortinet Fortisdnconnector. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36178?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-36178 published?

CVE-2021-36178 was published on 2021-10-06 and last updated on 2026-06-17.

CVE-2021-36178

CVE-2021-36178 is a medium-severity vulnerability in Fortinet Fortisdnconnector with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-522.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
Affected product: Fortinet Fortisdnconnector
Published: 2021-10-06
Last modified: 2026-06-17

Description

A insufficiently protected credentials in Fortinet FortiSDNConnector version 1.1.7 and below allows attacker to disclose third-party devices credential information via configuration page lookup.

Frequently asked questions

What is CVE-2021-36178?: A insufficiently protected credentials in Fortinet FortiSDNConnector version 1.1.7 and below allows attacker to disclose third-party devices credential information via configuration page lookup.
How severe is CVE-2021-36178?: CVE-2021-36178 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-36178 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36178?: CVE-2021-36178 affects Fortinet Fortisdnconnector. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36178?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36178 published?: CVE-2021-36178 was published on 2021-10-06 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-20-183

Affected products (1)

cpe:2.3:a:fortinet:fortisdnconnector:*:*:*:*:*:*:*:*

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