Is CVE-2022-23439 in the CISA KEV catalog?

No. CVE-2022-23439 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-23439?

CVE-2022-23439 has a CVSS v3 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2022-23439?

CVE-2022-23439 has an EPSS score of 0.44% (35th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-23439?

Upgrade fortiadc to 6.2.4 or later. Fixes are available for 14 affected products.

CVE & CISA-KEV Catalog

CVE-2022-23439

MEDIUM

4.7

CVSS v3

NVD

Description

A externally controlled reference to a resource in another sphere vulnerability in Fortinet allows attacker to poison web caches via crafted HTTP requests, where the `Host` header points to an arbitrary webserver

CWE-610

How to fix

Remediation Available

fortiadcNVD

Affected:>= 5.4.0, < 6.2.4Fixed in:6.2.4CVE-2022-23439derived from NVD

fortiauthenticatorNVD

Affected:>= 6.4.0, < 6.4.2Fixed in:6.4.2CVE-2022-23439derived from NVD

fortiddosNVD

Affected:>= 5.3.0, < 5.5.2Fixed in:5.5.2CVE-2022-23439derived from NVD

fortiddos-fNVD

Affected:>= 6.1.0, < 6.3.4Fixed in:6.3.4CVE-2022-23439derived from NVD

fortimailNVD

Affected:>= 6.4.0, < 7.0.4Fixed in:7.0.4CVE-2022-23439derived from NVD

fortindrNVD

Affected:>= 1.4.0, < 7.1.1Fixed in:7.1.1CVE-2022-23439derived from NVD

fortiosNVD

Affected:>= 7.2.0, < 7.2.5Fixed in:7.2.5CVE-2022-23439derived from NVD

fortiproxyNVD

Affected:>= 7.2.0, < 7.4.0Fixed in:7.4.0CVE-2022-23439derived from NVD

fortirecorderNVD

Affected:>= 6.4.0, < 6.4.3Fixed in:6.4.3CVE-2022-23439derived from NVD

fortisoarNVD

Affected:>= 6.4.0, < 7.3.0Fixed in:7.3.0CVE-2022-23439derived from NVD

fortiswitchNVD

Affected:>= 6.4.0, < 7.0.5Fixed in:7.0.5CVE-2022-23439derived from NVD

fortitesterNVD

Affected:>= 3.7.0, < 7.2.2Fixed in:7.2.2CVE-2022-23439derived from NVD

fortivoiceNVD

Affected:>= 6.0.0, < 6.4.9Fixed in:6.4.9CVE-2022-23439derived from NVD

fortiwlcNVD

Affected:>= 8.6.0, < 8.6.7Fixed in:8.6.7CVE-2022-23439derived 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 ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.44%probability of exploitation in 30 days

35thpercentile

Low risk: more likely to be exploited than 35% of all known CVEs.

References

Other references1

fortiguard.com

Related Vulnerabilities

Other CWE-610 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-27593	Critical	10.0	88%	KEV + Ransom	Fix
CVE-2017-18357	Medium	6.5	27%	-	Fix
CVE-2022-2633	High	7.5	25%	-	-
CVE-2017-0211	Medium	5.5	14%	-	-
CVE-2024-45826	Medium	6.8	11%	-	Fix
CVE-2020-5412	Medium	6.5	10%	-	Fix

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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 2026-01-14.