CVE-2025-68435CRITICAL 9.1EPSS p28.1%

CVE-2025-68435CVE-2025-68435

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.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS0.36% probability of exploitation · percentile 28.1% · 2026-06-18T12:00:27Z
Published2025-12-17
Last modified2026-03-05

Underlying weaknesses· 1

CWE-305

References

  1. https://github.com/nicotsx/zerobyte/commit/13e080a18967705bd2b4e110e5f7693fdca1c692
  2. https://github.com/nicotsx/zerobyte/issues/161
  3. https://github.com/nicotsx/zerobyte/security/advisories/GHSA-x539-c98q-38gv

1

TypeTargetConfidenceTier
WeaknessAuthentication Bypass by Primary Weaknesscwe-3050%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2025-60534
CVE
CVE-2025-11250
CVE
Zoho ManageEngine ServiceDesk Authentication Bypass Vulnerability
CVE
Zoho ManageEngine ADSelfService Plus Authentication Bypass Vulnerability
CVE
CVE-2025-8611
CVE
CVE-2026-0805
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.