Auth bypass in Milvus-Io Milvus
CVE-2025-64513
Milvus is an open-source vector database built for generative AI applications. An unauthenticated attacker can exploit a vulnerability in versions prior to 2.4.24, 2.5.21, and 2.6.5 to bypass all authentication mechanisms in the Milvus Proxy component, gaining full administrative access to the Milvus cluster. This grants the attacker the ability to read, modify, or delete data, and to perform privileged administrative operations such as database or collection management. This issue has been fixed in Milvus 2.4.24, 2.5.21, and 2.6.5. If immediate upgrade is not possible, a temporary mitigation can be applied by removing the sourceID header from all incoming requests at the gateway, API gateway, or load balancer level before they reach the Milvus Proxy. This prevents attackers from exploiting the authentication bypass behavior.
Vulnerability class: Broken Authentication
EPSS: 0.011 (62.9th percentile) — read the EPSS interpretation.
Affected products
- Milvus-io Milvus — versions < 2.4.24, >= 2.5.0, < 2.5.21, >= 2.6.0, < 2.6.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-64513?
- CVE-2025-64513 is a vulnerability in Milvus-Io Milvus, classified under Improper Authentication. Published 2025-11-10.
- Is CVE-2025-64513 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.