What’s Vulnerable › Vulnerabilities

CVE-2021-33959

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 15.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-01-18 · updated 2026-06-17
• Weakness: CWE-346

Description

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

Affected products

• Plex Media Server: through 1.21

References

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

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