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01 Record

CVE-2025-11915

HTTP Desynchronisation in Vertex AI for certain third-party models

MediumPUBLISHEDCNA: GoogleCloud
CNA base score6.9 CVSS v4.0CVSS: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
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02 Description

HTTP Desynchronisation in Vertex AI for certain third-party models

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.32% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 24.9% of scored records. A rank, not a probability.
NVD base score
6.9 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear
NVD analysis status
Deferred. NVD last modified this record on 2026-10-18.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-10-22 09:13Z1 YR AGO
Last updated
2025-10-23 09:23Z1 YR AGO
Reserved
2025-10-17
Assigning CNA
GoogleCloud
Record state
PUBLISHED
Severity
Medium (CVSS 6.9)
CNA CVSS vector
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
Weaknesses
  • CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')Base
Data version
5.1
Document digest
1242c98523d80f7c095a203be05047a010837ed418e3b777c52f715de17d4033

05 Affected products

VendorProductVersionsPlatforms
Google CloudVertex AI: Partner Models for MaaS0 to < 2025-09-26https://cloud.google.com/vertex-ai/generative-ai/docs/partner-models/use-partner-models
Google CloudVertex AI: Open Models for MaaS0 to < 2025-09-28https://cloud.google.com/vertex-ai/generative-ai/docs/maas/use-open-models
Google CloudVertex AI: Self-Deployed Models0 to < 2025-09-28https://cloud.google.com/vertex-ai/generative-ai/docs/model-garden/self-deployed-models

06 References