CVE-2025-52487Network attack vector

Unauthenticated IP allowlist bypass via spoofed proxy header

Published Jun 21, 2025 · Updated Jun 23, 2025

Incorrect authorization in DNN Platform 7.0.0 through 10.0.0 allows remote attackers to bypass login IP allowlists via crafted requests. The login IP filter trusts an X-Forwarded-For value even when UserRequestIPHeader does not explicitly designate that header. The bypass exposes authentication to attempts from non-allowlisted addresses; valid credentials or another authentication flaw remain necessary to sign in.

CVSS severity8.8
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in DNN Platform 7.0.0 through 10.0.0 allows remote attackers to bypass login IP allowlists via crafted requests. The login IP filter trusts an X-Forwarded-For value even when UserRequestIPHeader does not explicitly designate that header. The bypass exposes authentication to attempts from non-allowlisted addresses; valid credentials or another authentication flaw remain necessary to sign in.

The record

CVE
CVE-2025-52487
Published
Jun 21, 2025
Updated
Jun 23, 2025
Vendor
DNN Software
Product
DNN Platform
Classifications
CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 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=>= 7.0.0, < 10.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DNN Software · DNN Platformversion=>= 7.0.0, < 10.0.1

Published CVSS scores

8.8GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

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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