Is CVE-2026-21742 in the CISA KEV catalog?

No. CVE-2026-21742 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-21742?

CVE-2026-21742 has a CVSS v3 base score of 5.7 (MEDIUM).

What is the EPSS score for CVE-2026-21742?

CVE-2026-21742 has an EPSS score of 0.15% (4th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-21742?

Upgrade fortisoar to 7.6.4 or later.

CVE & CISA-KEV Catalog

CVE-2026-21742

MEDIUM

5.7

CVSS v3

NVD

Description

A cleartext transmission of sensitive information vulnerability in Fortinet FortiSOAR PaaS 7.6.0 through 7.6.3, FortiSOAR PaaS 7.5.0 through 7.5.2, FortiSOAR PaaS 7.4 all versions, FortiSOAR PaaS 7.3 all versions, FortiSOAR on-premise 7.6.0 through 7.6.2, FortiSOAR on-premise 7.5.0 through 7.5.1, FortiSOAR on-premise 7.4 all versions, FortiSOAR on-premise 7.3 all versions may allow an authenticated attacker to view cleartext password in response for Secure Message Exchange and Radius queries, if configured

CWE-319

How to fix

Remediation Available

fortisoarNVD

Affected:>= 7.6.0, < 7.6.4Fixed in:7.6.4CVE-2026-21742derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

0.15%probability of exploitation in 30 days

4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

Vendor Advisory1

fortiguard.fortinet.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.