Deserialization Vulnerability in Milvus HTTP Endpoint
CVE-2025-15453

5.3MEDIUM

Key Information:

Vendor

milvus-io

Status
Milvus
Vendor
CVE Published:
5 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-15453?

A critical deserialization vulnerability has been identified in the Milvus product affecting versions up to 2.6.7. This issue arises from improper handling of the argument code within the function expr.Exec of the HTTP Endpoint component located in pkg/util/expr/expr.go. Attackers can potentially exploit this vulnerability remotely, leading to unauthorized actions or access. A fix is scheduled for the upcoming release, version 2.6.8, aimed at mitigating this security risk.

Affected Version(s)

milvus 2.6.0

milvus 2.6.1

milvus 2.6.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-15453 - Proof of Concept

References

https://vuldb.com/?id.339486
vdb-entrytechnical-description
https://vuldb.com/?ctiid.339486
signaturepermissions-required
https://vuldb.com/?submit.719061
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

0x1f (VulDB User)
JSON
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CVE-2025-15453 : Deserialization Vulnerability in Milvus HTTP Endpoint