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CVE-2022-42478

25
FAUCET Score

CVE-2022-42478 is a high-severity vulnerability affecting FortiSIEM versions below 7.0.0, stemming from an improper restriction of excessive authentication attempts. This flaw allows a low-privileged attacker to conduct brute-force attacks against several endpoints, potentially leading to high impact on confidentiality, integrity, and availability. While the CVSS score is 8.8, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.1.0, <= 5.1.3CPE matchmatch criteria
cpe:2.3:a:fortinet:fortisiem:*:*:*:*:*:*:*:*
>= 5.3.0, <= 5.3.3CPE matchmatch criteria
cpe:2.3:a:fortinet:fortisiem:*:*:*:*:*:*:*:*
>= 6.3.0, <= 6.3.3CPE matchmatch criteria
cpe:2.3:a:fortinet:fortisiem:*:*:*:*:*:*:*:*
5.2.1CPE matchmatch criteria
cpe:2.3:a:fortinet:fortisiem:5.2.1:*:*:*:*:*:*:*
5.2.2CPE matchmatch criteria
cpe:2.3:a:fortinet:fortisiem:5.2.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.53%
Probability of exploitation in next 30 days
EPSS Percentile
41.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0053 is in the 31st percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Vendor Patches (1)

fortinetvendor investigatingvia nvd_reference
View patch

References

fortiguard.com / psirt/FG-IR-22-258
Vendor Advisory