CVE-2023-24104Public exploitNetwork attack vector

Domain-filter bypass via absent Host and SNI

Published Feb 23, 2023 · Updated Mar 18, 2025

Incorrect access control in Ubiquiti UniFi Dream Machine Pro 7.2.95 allows remote attackers to bypass configured domain filters. The Web DPI engine relies on the HTTP Host header or TLS SNI to identify a requested domain, so traffic sent by IP with the relevant field omitted evades matching. Exploitation requires domain-based Web DPI blocking on routed traffic and permits access to destinations the administrator intended to block.

CVSS severity9.8
Critical
EPSS probability0.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in Ubiquiti UniFi Dream Machine Pro 7.2.95 allows remote attackers to bypass configured domain filters. The Web DPI engine relies on the HTTP Host header or TLS SNI to identify a requested domain, so traffic sent by IP with the relevant field omitted evades matching. Exploitation requires domain-based Web DPI blocking on routed traffic and permits access to destinations the administrator intended to block.

The record

CVE
CVE-2023-24104
Published
Feb 23, 2023
Updated
Mar 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1090.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 exploitPublished

Weakness, pattern, technique

T1090.004Proxy: Domain Fronting

Public exploit references

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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