What is CVE-2023-42954?

CVE-2023-42954 is a medium-severity vulnerability in Claris Pro, classified under CWE-250. CVSS score: 4.9/10. Published 2024-03-21.

How severe is CVE-2023-42954?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Is CVE-2023-42954 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Claris Pro

CVE-2023-42954

A privilege escalation issue existed in FileMaker Server, potentially exposing sensitive information to front-end websites when signed in to the Admin Console with an administrator role. This issue has been fixed in FileMaker Server 20.3.1 by reducing the information sent in requests.

Published 2024-03-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (36.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Claris Pro
Claris Filemaker Server — versions unspecified
Claris Filemaker Server

Weakness classification (CWE)

CWE-250

Public proof-of-concept exploits

NaInSec/CVE-LIST

References

support.claris.com/s/answerview (Vendor Advisory)

Frequently asked questions

What is CVE-2023-42954?: CVE-2023-42954 is a medium-severity vulnerability in Claris Pro, classified under CWE-250. CVSS score: 4.9/10. Published 2024-03-21.
How severe is CVE-2023-42954?: Medium severity. CVSS v3 base score is 4.9 out of 10.
Is CVE-2023-42954 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.