How serious is CVE-2025-8766?

This vulnerability has a CVSS score of 6.4 out of 10, classified as MEDIUM severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2025-8766?

Yes, proof-of-concept exploit code for CVE-2025-8766 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2025-8766?

Check the official CVE details for a complete list of affected products and versions.

How do I fix CVE-2025-8766?

To remediate CVE-2025-8766, check for security patches from the vendor. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2025-8766

Medium

|6.4

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

An attacker can gain full root privileges within a vulnerable container by modifying the system's user file, allowing them to create a new user with administrative rights. This can happen if they can run commands inside the container and are part of the root group, taking advantage of a misconfigured file permission during the container's setup.

Technical Description

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 Vector Analysis

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeUnchanged

Vector String

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Resources

Search for proof-of-concept code and exploit modules

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Official References

NIST NVD

Est. Bounty

$914($500-$1K)

Vendor Response

Grade APatched in 2 days

Quick Information

Published

Mar 13, 2026

25 days ago

Last Modified

Mar 16, 2026

22 days ago