CVE-2023-42954Network attack vector

Administrator-authenticated information disclosure via overbroad request data

Published Mar 21, 2024 · Updated Aug 27, 2024

Privilege escalation in Claris FileMaker Server before 20.3.1 allows remote authenticated users to expose sensitive information to front-end websites. The Admin Console sends more information than necessary in requests to front-end websites; Claris has not disclosed the affected endpoint or fields. An administrator role and Admin Console sign-in are required, and the reported consequence is limited to sensitive-information exposure.

CVSS severity4.9
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Claris FileMaker Server before 20.3.1 allows remote authenticated users to expose sensitive information to front-end websites. The Admin Console sends more information than necessary in requests to front-end websites; Claris has not disclosed the affected endpoint or fields. An administrator role and Admin Console sign-in are required, and the reported consequence is limited to sensitive-information exposure.

The record

CVE
CVE-2023-42954
Published
Mar 21, 2024
Updated
Aug 27, 2024
Vendor
Claris
Product
FileMaker Server
Classifications
CWE-250
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <20.3.1
  2. Affected versionversion=unspecified <20.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Claris · FileMaker Serverversion=0 <20.3.1; version=unspecified <20.3.1

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-250Execution with Unnecessary Privileges

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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