CVE-2021-35492

MEDIUM

Wowza Streaming Engine <4.8.11+5 - DoS

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-35492. PoCs published by N4nj0.

AI-analyzed exploit summary This repository contains a functional Python script that exploits CVE-2021-35492, an uncontrolled resource consumption vulnerability in Wowza Streaming Engine. The exploit sends repeated HTTP requests to the `/enginemanager/server/vhost/historical.jsdata` endpoint with crafted parameters to exhaust filesystem resources, leading to a denial of service.

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.)

Exploits (1)

nomisec WORKING POC
by N4nj0 · poc
https://github.com/N4nj0/CVE-2021-35492

This repository contains a functional Python script that exploits CVE-2021-35492, an uncontrolled resource consumption vulnerability in Wowza Streaming Engine. The exploit sends repeated HTTP requests to the `/enginemanager/server/vhost/historical.jsdata` endpoint with crafted parameters to exhaust filesystem resources, leading to a denial of service.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Wowza Streaming Engine <= 4.8.11+5
Auth required
Prerequisites: Valid JSESSIONID cookie for authentication · Network access to the target Wowza Streaming Engine instance
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://www.gruppotim.it/redteam
Release Notes, Vendor Advisory x_refsource_misc
https://www.wowza.com/docs/wowza-streaming-engine-4-8-14-release-notes
Third Party Advisory x_refsource_misc
https://n4nj0.github.io/advisories/wowza-streaming-engine-i/

Scores

CVSS v3 6.5
EPSS 0.0328
EPSS Percentile 86.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-770
Status published
Products (1)
wowza/streaming_engine < 4.8.11
Published Oct 05, 2021
Tracked Since Feb 18, 2026