HTTP Desynchronisation in Vertex AI for certain third-party models
Priority LOW 36CWE-444Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00322 25th percentileScored 2026-11-07
Fix Fixed Vertex AI: Partner Models for MaaS (Google Cloud): 2025-09-26Vertex AI: Open Models for MaaS (Google Cloud): 2025-09-28+1 more product
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Vertex AI: Partner Models for MaaS | before 2025-09-26 | 2025-09-26 | Patch available | CNA | |
| Vertex AI: Open Models for MaaS | before 2025-09-28 | 2025-09-28 | Patch available | CNA | |
| Vertex AI: Self-Deployed Models | before 2025-09-28 | 2025-09-28 | Patch available | CNA |
- Vertex AI: Partner Models for MaaS VendorGoogle Affected before 2025-09-26 Fixed in 2025-09-26 Patch available CNA
- Vertex AI: Open Models for MaaS VendorGoogle Affected before 2025-09-28 Fixed in 2025-09-28 Patch available CNA
- Vertex AI: Self-Deployed Models VendorGoogle Affected before 2025-09-28 Fixed in 2025-09-28 Patch available CNA
Remediation
- Fix · CNA Vertex AI: Partner Models for MaaS (Google Cloud) Fixed in 2025-09-26
- Fix · CNA Vertex AI: Open Models for MaaS (Google Cloud) Fixed in 2025-09-28
- Fix · CNA Vertex AI: Self-Deployed Models (Google Cloud) Fixed in 2025-09-28
Timeline
- 2026-10-02 Threatist record created from CVE-2025-11915
- 2026-10-03 Alias added: GHSA-cwmv-37m7-7829
References
More Google vulnerabilities
- TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
- TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
Sources
- CVE-2025-11915 · CVE Program
- CVE-2025-11915 · NVD
- FIRST EPSS
- GHSA-cwmv-37m7-7829 · GitHub Advisory Database · CC BY 4.0
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