CVE-2025-34433CWE-94

AVideo < 20.1 Unauthenticated RCE via Predictable Installation Salt

Critical · published December 19, 2025

CVSS v4.0
9.3
EPSS
1%
Percentile
73.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
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
EPSS
0.01480 · 73.7th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2025-12-19T15:37Z
EPSS history
Timeline
  • 19 DEC 15:37Z
    AVideo < 20.1 Unauthenticated RCE via Predictable Installation Salt
    cvelistv5