CVE-2025-2515CWE-863broken-access-control

CVE-2025-2515

High · published December 24, 2025

CVSS v3.1
7.2
EPSS
0%
Percentile
10.4
In the wild
Unconfirmed
What it is

⚡ A root user on a managed node can access the keys to the kingdom! This vulnerability in BlueChi allows for unauthorized creation or modification of systemd service unit files — that’s like letting a guest run the whole hotel! 🔥 Think of it like a hotel where a guest (the root user) can change the room service menu (systemd service unit files) to include anything they want, even if it’s something dangerous or inappropriate. If the front desk (host node) doesn’t notice, chaos could ensue! With this capability, a malicious user could escalate their privileges, run unauthorized services, or even compromise the entire system. It’s an absolute recipe for disaster if left unaddressed! Imagine someone sneaking in and taking over the entire hotel operation — very alarming!

Put simply

Think of it like a hotel where a guest (the root user) can change the room service menu (systemd service unit files) to include anything they want, even if it’s something dangerous or inappropriate. If the front desk (host node) doesn’t notice, chaos could ensue! This vulnerability allows a root user on a managed node (qm) to create or override systemd service unit files on the host node, potentially leading to privilege escalation and unauthorized service execution.

What to do

With this capability, a malicious user could escalate their privileges, run unauthorized services, or even compromise the entire system. It’s an absolute recipe for disaster if left unaddressed! Imagine someone sneaking in and taking over the entire hotel operation — very alarming! To shore up your defenses, restrict root access on managed nodes, review service unit files regularly, and consider applying any available patches or updates from BlueChi. Additionally, monitor system logs for any suspicious activity related to service modifications. You've got this! Take action now to secure your system, and you'll have it locked down in no time! 🛡️

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00209 · 10.4th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2025-12-24T22:15Z
References (5)
EPSS history
Timeline
  • 24 DEC 16:21Z
    Bluechi: privilege escalation in bluechi via unrestricted cross-node systemd dependencies
    cvelistv5