CVE-2025-68435 Zerobyte has Authentication Bypass by Primary Weakness
Attackers can access API endpoints without valid credentials due to missing authentication middleware, potentially exposing backup data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-68435?
CVE-2025-68435 is a critical authentication bypass vulnerability in nicotsx zerobyte, published on 17 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Zerobyte is a backup automation tool Zerobyte versions prior to 0.18.5 and 0.19.0 contain an authentication bypass vulnerability where authentication middleware is not properly applied to API endpoints. This results in certain API endpoints being accessible without valid session credentials. This is dangerous for those who have exposed Zerobyte to be used outside of their internal network. A fix has been applied in both version 0.19.0 and 0.18.5. If immediate upgrade is not possible, restrict network access to the Zerobyte instance to trusted networks only using firewall rules or network segmentation. This is only a temporary mitigation; upgrading is strongly recommended.
Weakness: CWE-305
Which versions are affected by CVE-2025-68435?
It affects 1 product.
Products include Nicotsx Zerobyte.
How do I fix CVE-2025-68435?
No fix has been published for CVE-2025-68435 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-68435 being exploited?
There is no known exploitation of CVE-2025-68435 in the wild and no public exploit code.
Sources
Also known as GHSA-x539-c98q-38gv.