What is CVE-2023-4553?

CVE-2023-4553 is a medium-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2024-01-29.

How severe is CVE-2023-4553?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2023-4553 known to be exploited?

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

Improper input validation in Linux Kernel

CVE-2023-4553

Improper Input Validation vulnerability in OpenText AppBuilder on Windows, Linux allows Probe System Files. AppBuilder configuration files are viewable by unauthenticated users. This issue affects AppBuilder: from 21.2 before 23.2.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2024-01-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.6% 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

Linux Kernel
Microsoft Windows
Opentext Appbuilder — versions 23.2, 21.2

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

cxosmo/CVEs

References

support.opentext.com/csm (Permissions Required)

Frequently asked questions

What is CVE-2023-4553?: CVE-2023-4553 is a medium-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2024-01-29.
How severe is CVE-2023-4553?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-4553 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.