CVE-2025-11915— HTTP Desynchronisation in Vertex AI for certain third-party models
Quick assessment
Affected
Google Cloud Vertex AI: Partner Models for MaaS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Google Cloud Vertex AI API是美国谷歌（Google）公司的一套机器学习平台接口。 Google Cloud Vertex AI API存在安全漏洞，该漏洞源于HTTP代理与模型后端之间的连接不同步。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-11915
Vulnerability Information
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Vulnerability Title
HTTP Desynchronisation in Vertex AI for certain third-party models
Source: CVE Program / CVE List V5
Vulnerability Description
Connection desynchronization between an HTTP proxy and the model backend. The fixes were rolled out for all proxies in front of impacted models by 2025-09-28. Users do not need to take any action.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:L/SI:N/SA:L/U:Clear
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
Google Cloud Vertex AI API 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Cloud Vertex AI API是美国谷歌（Google）公司的一套机器学习平台接口。 Google Cloud Vertex AI API存在安全漏洞，该漏洞源于HTTP代理与模型后端之间的连接不同步。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Google Cloud | Vertex AI: Partner Models for MaaS | 0 ~ 2025-09-26 | - |
|
| Google Cloud | Vertex AI: Open Models for MaaS | 0 ~ 2025-09-28 | - |
|
| Google Cloud | Vertex AI: Self-Deployed Models | 0 ~ 2025-09-28 | - |
|
II. Public POCs for CVE-2025-11915
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2025-11915 (1)
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V. Comments for CVE-2025-11915
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