CVE-2025-46390Network attack vector

Unauthenticated disclosure via response discrepancy

Published Aug 6, 2025 · Updated Aug 6, 2025

Observable response discrepancy in Emby Server 4.9.0.35 allows remote attackers to disclose sensitive data via network requests. The CNA identifies no affected component, request field, compared responses, or specific data exposed, so the faulty operation remains undisclosed. Exploitation requires no authentication or user interaction; the published impact is limited to confidentiality, with no integrity or service interruption.

CVSS severity7.5
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Observable response discrepancy in Emby Server 4.9.0.35 allows remote attackers to disclose sensitive data via network requests. The CNA identifies no affected component, request field, compared responses, or specific data exposed, so the faulty operation remains undisclosed. Exploitation requires no authentication or user interaction; the published impact is limited to confidentiality, with no integrity or service interruption.

The record

CVE
CVE-2025-46390
Published
Aug 6, 2025
Updated
Aug 6, 2025
Vendor
Media Browser
Product
Emby Server
Classifications
CWE-204, CAPEC-541, CAPEC-331, CAPEC-580, CAPEC-332
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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=4.9.0.35

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Media Browser · Emby Serverversion=4.9.0.35

Published CVSS scores

7.5Israel National Cyber DirectorateCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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-204Observable Response Discrepancy
CAPEC-541Application Fingerprinting
CAPEC-331ICMP IP Total Length Field Probe
CAPEC-580System Footprinting
CAPEC-332ICMP IP 'ID' Field Error Message Probe

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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