CVE-2025-68435CWE-305

Zerobyte has Authentication Bypass by Primary Weakness

Critical · published December 17, 2025

CVSS v3.1
9.1
EPSS
0%
Percentile
34.3
In the wild
Unconfirmed
What it is

🚨 One sneaky API endpoint is all it takes! In Zerobyte versions prior to 0.18.5 and 0.19.0, the authentication middleware doesn’t guard certain APIs, making them as accessible as a free-for-all buffet. 🔥 Think of it like a hotel with an unlocked back door. While guests have room keys, anyone can stroll in through that door and access everything behind the scenes — including sensitive data! This oversight could lead to attackers waltzing in without proper credentials, potentially accessing or manipulating your backups. Imagine the chaos if sensitive data fell into the wrong hands; it could be absolutely devastating for your organization!

Put simply

Think of it like a hotel with an unlocked back door. While guests have room keys, anyone can stroll in through that door and access everything behind the scenes — including sensitive data! This vulnerability arises from the authentication middleware not being properly enforced on certain API endpoints in Zerobyte, allowing unauthorized access.

What to do

This oversight could lead to attackers waltzing in without proper credentials, potentially accessing or manipulating your backups. Imagine the chaos if sensitive data fell into the wrong hands; it could be absolutely devastating for your organization! Upgrade immediately to versions 0.18.5 or 0.19.0 to close this critical gap. If an upgrade isn’t feasible right away, ensure you restrict network access using firewall rules or segment your network to limit exposure. This is just a temporary fix until the upgrade can be implemented! You’ve got this! Follow these steps, and you’ll be protecting your data in no time. 🛡️

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00412 · 34.3th percentile
Weakness
CWE-305 · Authentication Bypass by Primary Weakness
Published
2025-12-17T23:10Z
EPSS history
Timeline
  • 17 DEC 23:10Z
    Zerobyte has Authentication Bypass by Primary Weakness
    cvelistv5