CVE-2025-8766A container privilege escalation flaw was found in certain Multi-Cloud Object Gateway Core images.
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A container privilege escalation flaw was found in certain Multi-Cloud Object Gateway Core images. This issue stems from the /etc/passwd file being created with group-writable permissions during build time. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This could allow the attacker to add a new user with any arbitrary UID, including UID 0, leading to full root privileges within the container
- CVSS
- 6.4 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-276
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
redhat openshift_data_foundation redhat:openshift_data_foundation | 4.0 | NVD |
References
- https://access.redhat.com/errata/RHSA-2026:37387
- https://access.redhat.com/security/cve/CVE-2025-8766third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2387265third-party-advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-8766.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.