Auth bypass in Canonical Juju
CVE-2025-0928
In Juju versions prior to 3.6.8 and 2.9.52, any authenticated controller user was allowed to upload arbitrary agent binaries to any model or to the controller itself, without verifying model membership or requiring explicit permissions. This enabled the distribution of poisoned binaries to new or upgraded machines, potentially resulting in remote code execution.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.001
Affected products
- Canonical Juju — versions 2.0.0, 3.0.0
Weakness classification (CWE)
References
- github.com/juju/juju/security/advisories/GHSA-4vc8-wvhw-m5gv (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-0928?
- CVE-2025-0928 is a high-severity vulnerability in Canonical Juju, classified under Improper Authorization. CVSS score: 8.8/10. Published 2025-07-08.
- How severe is CVE-2025-0928?
- High severity. CVSS v3 base score is 8.8 out of 10.