CVE-2021-33959

View on CVE.org

Published Jan 18, 2023 CVSS 3.1 · 7.5 High EPSS 15.0% KEV · Not listed

Description

Plex media server 1.21 and before is vulnerable to ddos reflection attack via plex service.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: 15.0% (15.035% probability within 30 days)

Exploitation poc

Automatable yes

Technical Impact partial

References

Link	Providers
https://github.com/lixiang957/CVE-2021-33959
https://www.freebuf.com/articles/web/260338.html

History

Apr 4, 2025 6:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Plex Media Server

Weaknesses

CWE-346

Sources

CVE record Updated: Apr 4, 2025, 5:31 PM

Status: PUBLISHED
Assigner: mitre
Published: Jan 18, 2023, 12:00 AM
Updated: Apr 4, 2025, 5:31 PM
Reserved: Jun 7, 2021, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 4, 2024, 12:05 AM

Updated: Aug 4, 2024, 12:05 AM

NVD Updated: Jun 17, 2026, 3:55 AM

Status: Modified
Published: Jan 18, 2023, 2:15 PM
Modified: Jun 17, 2026, 3:55 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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