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CVE-2023-42784

25
FAUCET Score

CVE-2023-42784 is a critical vulnerability affecting Fortinet FortiWeb versions 7.4.0-7.4.6, 7.2.0-7.2.10, and 7.0.0-7.0.10. It allows unauthenticated attackers to execute arbitrary code or commands by sending specially crafted HTTP/S requests that exploit improper handling of syntactically invalid structures. With a CVSS score of 9.8 (CRITICAL), this vulnerability poses a significant risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Currently, there is no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.0.0, <= 7.0.10CPE match
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
>= 7.2.0, <= 7.2.10CPE match
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
>= 7.4.0, <= 7.4.7CPE match
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.4.7CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.6MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 6th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

fortiguard.fortinet.com / psirt/FG-IR-23-115
Vendor Advisory