Is CVE-2021-32833 actively exploited?

No active exploitation of CVE-2021-32833 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-32833 be exploited remotely?

Yes. CVE-2021-32833 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-32833?

CVE-2021-32833 has a CVSS score of 8.6 (HIGH).

HOME VULNERABILITIESCVE-2021-32833

HIGH

CVE-2021-32833

CWE-552Published: September 9, 2021· Updated: Jun 17, 2026

8.6

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2021-32833 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.