CVE-2023-42955Network attack vector

Administrator password disclosure via Node.js socket

Published Apr 26, 2024 · Updated Aug 2, 2024

Credential exposure in Claris FileMaker Server before 20.3.1 allows remote authenticated users to obtain administrator-role passwords. The Admin Console's Node.js socket sends administrator-role passwords to front-end websites instead of keeping those credentials server-side. An administrator must be signed in to the Admin Console; exposure is limited to credential confidentiality, with no reported direct data modification or service interruption.

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

Credential exposure in Claris FileMaker Server before 20.3.1 allows remote authenticated users to obtain administrator-role passwords. The Admin Console's Node.js socket sends administrator-role passwords to front-end websites instead of keeping those credentials server-side. An administrator must be signed in to the Admin Console; exposure is limited to credential confidentiality, with no reported direct data modification or service interruption.

The record

CVE
CVE-2023-42955
Published
Apr 26, 2024
Updated
Aug 2, 2024
Vendor
Claris
Product
FileMaker Server
Classifications
CWE-522, CWE-257, T1552
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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

6.1CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
CWE-257Storing Passwords in a Recoverable Format
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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