What’s Vulnerable › Vulnerabilities

CVE-2021-35492

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-05 · updated 2026-06-17
• Weakness: CWE-770

Description

Wowza Streaming Engine through 4.8.11+5 could allow an authenticated, remote attacker to exhaust filesystem resources via the /enginemanager/server/vhost/historical.jsdata vhost parameter. This is due to the insufficient management of available filesystem resources. An attacker could exploit this vulnerability through the Virtual Host Monitoring section by requesting random virtual-host historical data and exhausting available filesystem resources. A successful exploit could allow the attacker to cause database errors and cause the device to become unresponsive to web-based management. (Manual intervention is required to free filesystem resources and return the application to an operational state.)

Affected products

• Wowza Streaming Engine: through 4.8.11

References

• https://n4nj0.github.io/advisories/wowza-streaming-engine-i/
• https://www.gruppotim.it/redteam
• https://www.wowza.com/docs/wowza-streaming-engine-4-8-14-release-notes
• https://n4nj0.github.io/advisories/wowza-streaming-engine-i/
• https://www.gruppotim.it/redteam
• https://www.wowza.com/docs/wowza-streaming-engine-4-8-14-release-notes

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