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CVE-2022-23439

18
FAUCET Score

CVE-2022-23439 is a medium-severity vulnerability affecting Fortinet products, allowing attackers to poison web caches. By crafting HTTP requests with an arbitrary Host header, an attacker can redirect resource references to an external, controlled server. The CVSS score of 6.1 indicates a network-based attack with low complexity, requiring user interaction, and potentially leading to limited confidentiality and integrity impacts. While the vulnerability is not currently listed in CISA's KEV catalog, there is no public exploit code available, nor has it garnered significant community discussion or media coverage, suggesting a low current exploitation risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.4.0, < 6.2.4CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiadc:*:*:*:*:*:*:*:*
>= 6.3.0, < 6.3.4CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*
>= 6.4.0, < 6.4.2CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*
>= 5.3.0, < 5.5.2CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiddos:*:*:*:*:*:*:*:*
>= 6.1.0, < 6.3.4CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiddos-f:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 38th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

fortiguard.com / psirt/FG-IR-23-494