CVE-2023-28724

Sensitive file modification via permissive defaults

Published May 3, 2023 · Updated Feb 13, 2025

Incorrect default permissions in F5 NGINX Management Suite products allow local users to modify sensitive files. Installation defaults grant overly broad write access to unspecified sensitive files, allowing a low-privileged account to replace or alter their contents. F5 has not identified the affected paths or permission bits; exploitation requires local low-privileged access and can expose or alter protected data without interrupting service.

CVSS severity7.1
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect default permissions in F5 NGINX Management Suite products allow local users to modify sensitive files. Installation defaults grant overly broad write access to unspecified sensitive files, allowing a low-privileged account to replace or alter their contents. F5 has not identified the affected paths or permission bits; exploitation requires local low-privileged access and can expose or alter protected data without interrupting service.

The record

CVE
CVE-2023-28724
Published
May 3, 2023
Updated
Feb 13, 2025
Vendor
F5 Networks
Product
NGINX API Connectivity Manager
Classifications
CWE-276, T1565.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=1.0.0 <1.5.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

F5 Networks · NGINX API Connectivity Managerversion=1.0.0 <1.5.0
F5 Networks · NGINX Instance Managerversion=1.0.0 <*; version=2.0.0 <2.9.0
F5 Networks · NGINX Security Monitoringversion=1.0.0 <1.3.0

Published CVSS scores

7.1F5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1565.001Stored Data Manipulation

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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