Unauthenticated file read in Emby Server
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-552.
Summary
Emby Server is a personal media server with apps on many devices. In Emby Server on Windows there is a set of arbitrary file read vulnerabilities. This vulnerability is known to exist in version 4.6.4.0 and may not be patched in later versions. Known vulnerable routes are /Videos/Id/hls/PlaylistId/SegmentId.SegmentContainer, /Images/Ratings/theme/name and /Images/MediaInfo/theme/name. For more details including proof of concept code, refer to the referenced GHSL-2021-051. This issue may lead to unauthorized access to the system especially when Emby Server is configured to be accessible from the Internet.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MediaBrowser | Emby.Releases | up to 4.6.4.0 | — | No fix listed | CNA |
- Emby.Releases VendorMediaBrowser Affected up to 4.6.4.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-32833
- 2026-10-03 Alias added: GHSA-2mfq-w3fm-wxm3
References
More Emby.releases vulnerabilities
- TI-2023-16370 Emby Server Proxy Header Spoofing Vulnerability CVSS 3.1CRITICAL 9.1
- TI-2023-03856 Media Browser Emby Server cross site scripting CVSS 3.1MEDIUM 6.1
Sources
- CVE-2021-32833 · CVE Program
- CVE-2021-32833 · NVD
- FIRST EPSS
- GHSA-2mfq-w3fm-wxm3 · GitHub Advisory Database · CC BY 4.0
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