CVE-2025-66446CWE-362

CVE-2025-66446

High · published December 12, 2025

CVSS v3.1
8.8
EPSS
0%
Percentile
27.3
In the wild
Unconfirmed
What it is

⚡ An attacker could leverage improper file permissions to overwrite critical system files in MaxKB, allowing for potentially devastating privilege escalation! 🔥 Think of it like a maintenance worker who can waltz into a secure room and replace important blueprints without anyone noticing. If they can change the plans, they could construct something entirely different—and maybe even dangerous! This vulnerability could allow an attacker to gain unauthorized access to sensitive areas of the system, enabling them to execute harmful commands or manipulate data as if they were an admin. The potential fallout could be absolutely devastating for any enterprise relying on MaxKB's AI capabilities!

Put simply

Think of it like a maintenance worker who can waltz into a secure room and replace important blueprints without anyone noticing. If they can change the plans, they could construct something entirely different—and maybe even dangerous! Versions 2.3.1 and below of MaxKB have improper file permissions that permit attackers to overwrite the built-in dynamic linker and other critical files, creating an avenue for privilege escalation that should never have been there!

What to do

This vulnerability could allow an attacker to gain unauthorized access to sensitive areas of the system, enabling them to execute harmful commands or manipulate data as if they were an admin. The potential fallout could be absolutely devastating for any enterprise relying on MaxKB's AI capabilities! To safeguard your system, immediately upgrade to version 2.4.0 to close this loophole. Additionally, conduct a review of your file permissions to ensure that no unauthorized access can occur in the future. Stay vigilant! You've got this! Follow these steps and you'll secure your system in no time! 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00349 · 27.3th percentile
Weakness
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Published
2025-12-12T03:15Z
Affected products (1)
ProductVersionsFixed in
maxkb/maxkb< 2.4.02.4.0
References (2)
EPSS history
Timeline
  • 11 DEC 21:47Z
    MaxKB has a Python sandbox LD_PRELOAD bypass
    cvelistv5