What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-19 · updated 2026-06-17
• Weakness: CWE-94

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.

Affected products

• WWBN AVideo: from 14.3.1 before 20.1 — fixed in 20.1

How to fix

Upgrade to a fixed version: WWBN AVideo 20.1. Check the vendor advisory for mitigations.

References

• https://chocapikk.com/posts/2025/avideo-security-vulnerabilities/
• 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

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