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NVD / CVE Program· CNA fortinet

CVE-2023-42787: A client-side enforcement of server-side security [CWE-602] vulnerability in Fortinet FortiManager version 7.4.0 and before 7.2.3 and FortiA

Noroxi assessment

Priority: Monitor (action score 27/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.7% (FIRST EPSS); higher than 77.8% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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 code execution.

MediumCVSS 6.5 · v3.1—No exploit No fix recorded
Published
Oct 10, 2023
Updated
Aug 12, 2026
EPSS
1.7% · 77th percentile

Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 1.7%

CNA vs NVD score

NVD
6.5
CNA · fortinet
6.2
0.3 point gap

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:X

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-42787

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
fortinetfortianalyzer
fortinetfortimanager

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fortinet fortianalyzer6.2.0 and later · up to 6.2.12 inclusive
  • fortinet fortianalyzer6.4.0 and later · up to 6.4.13 inclusive
  • fortinet fortianalyzer7.0.0 and later · up to 7.0.9 inclusive
  • fortinet fortianalyzer7.2.0 and later · up to 7.2.3 inclusive
  • fortinet fortianalyzer7.4.0
  • fortinet fortimanager6.2.0 and later · up to 6.2.12 inclusive
  • fortinet fortimanager6.4.0 and later · up to 6.4.13 inclusive
  • fortinet fortimanager7.0.0 and later · up to 7.0.9 inclusive
  • fortinet fortimanager7.2.0 and later · up to 7.2.3 inclusive
  • fortinet fortimanager7.4.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (fortinet). Independent of NVD's CPE analysis and usually ahead of it.

  • Fortinet FortiAnalyzer

    • 7.4.0affected
    • 7.2.0 and later · up to and including 7.2.3affected · semver
    • 7.0.0 and later · up to and including 7.0.9affected · semver
    • 6.4.0 and later · up to and including 6.4.15affected · semver
    • 6.2.0 and later · up to and including 6.2.13affected · semver

  • Fortinet FortiAnalyzer Cloud

    • 7.0.1 and later · up to and including 7.0.9affected · semver

  • Fortinet FortiAnalyzer-BigData

    • 6.2.5affected
    • 7.2.0 and later · up to and including 7.2.5affected · semver
    • 7.0.1 and later · up to and including 7.0.6affected · semver
    • 6.4.5 and later · up to and including 6.4.7affected · semver

  • Fortinet FortiManager

    • 7.4.0affected
    • 7.2.0 and later · up to and including 7.2.3affected · semver
    • 7.0.0 and later · up to and including 7.0.9affected · semver
    • 6.4.0 and later · up to and including 6.4.15affected · semver
    • 6.2.0 and later · up to and including 6.2.13affected · semver

Same product

fortinet: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-24858An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.KEV
    95Now
  • CVE-2021-32589A Use After Free (CWE-416) vulnerability in FortiManager version 7.0.0, version 6.4.5 and below, version 6.2.7 and below, version 6.0.10 and
    42Plan
  • CVE-2024-50563A weak authentication in Fortinet FortiManager Cloud, FortiAnalyzer versions 7.6.0 through 7.6.1, 7.4.1 through 7.4.3, FortiAnalyzer Cloud v
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2023-41838Oct 10, 2023 · An improper neutralization of special elements used in an os command ('os command injection') in FortiManager 7.4.0 and 7.2.0 through 7.2.3
    28Monitor
  • ← EarlierCVE-2023-42782Oct 10, 2023 · A insufficient verification of data authenticity vulnerability [CWE-345] in FortiAnalyzer version 7.4.0 and below 7.2.3 allows a remote unau
    21Monitor
  • Later →CVE-2023-42788Oct 10, 2023 · An improper neutralization of special elements used in an os command ('OS Command Injection') vulnerability [CWE-78] in FortiManager & Forti
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-602 · Client-Side Enforcement of Server-Side Security

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records