Cyber Resilience

CVE-2023-42787

Fortinet Fortianalyzer 6.2.0 – 6.2.12

Public PoC
Published
10 October 2023
Modified
12 August 2026
Patch / advisory
View advisory
CVSS Score v3.1 6.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.014 69th percentile
Risk Priority 53 floored blend · peak EPSS

Summary

CVE-2023-42787 is a medium-severity Client-Side Enforcement of Server-Side Security (CWE-602) vulnerability in Fortinet Fortianalyzer. Its CVSS base score is 6.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 31% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

A06:2025 Insecure Design

EU & UK References

Vulnerability Data

A client-side enforcement of server-side security [CWE-602] vulnerability in Fortinet FortiManager version 7.4.0 and before 7.2.3 and FortiAnalyzer version 7.4.0 and before 7.2.3 may allow a remote attacker with low privileges to access a privileged web console via client side…

more

code execution.

CWE(s)
CWE-602NVD-CWE-Other

Related Threats

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-23666Same product: Fortinet Fortianalyzer
CVE-2023-44256Same product: Fortinet Fortianalyzer
CVE-2024-36508Same product: Fortinet Fortianalyzer
CVE-2024-33502Same product: Fortinet Fortianalyzer
CVE-2023-25606Same product: Fortinet Fortianalyzer
CVE-2023-25609Same product: Fortinet Fortianalyzer
CVE-2023-44249Same product: Fortinet Fortianalyzer
CVE-2024-36512Same product: Fortinet Fortianalyzer
CVE-2023-44254Same product: Fortinet Fortianalyzer
CVE-2024-32117Same product: Fortinet Fortianalyzer

Affected Assets

fortinet
fortianalyzer
7.4.0 · 6.2.0 — 6.2.12 · 6.4.0 — 6.4.13 · 7.0.0 — 7.0.9
fortinet
fortimanager
7.4.0 · 6.2.0 — 6.2.12 · 6.4.0 — 6.4.13 · 7.0.0 — 7.0.9

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V10.7.1
  • V2.2.2
  • V8.3.1
  • V10.4.1

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent design flaws that place server security enforcement on the client.

PR.AA-05 partial match
prevents

Proper policy-based enforcement of authorizations implies server-side controls rather than client-only checks.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.27 Secure system architecture and engineering principles mostly match
prevents

Secure architecture principles discourage client-side trust but do not directly address this weakness.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect client-side enforcement but is not the primary mitigation.

A.8.3 Information access restriction mostly match
prevents

Information access restriction is undermined when the client is trusted to enforce it.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates server-side validation and prevents reliance on client enforcement.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for server-side enforcement of security mechanisms.

A.8.28 Secure coding partial match
prevents

Secure coding standards require server-side checks and reject client-only enforcement.

References