CVE-2025-13427
MEDIUM EPSS 25.9%
Published Dec 18, 20256mo ago · Modified Jun 17, 20262w ago
6.9 CVSS 4.0
Published Dec 18, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago
Description
An authentication bypass vulnerability in Google Cloud Dialogflow CX Messenger allowed unauthenticated users to interact with restricted chat agents, gaining access to the agents' knowledge and the ability to trigger their intents, by manipulating initialization parameters or crafting specific API requests. All versions after August 20th, 2025 have been updated to protect from this vulnerability. No user action is required for this.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/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:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
25.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-287 Improper Authentication Authentication
References 1
- docs.cloud.google.com https://docs.cloud.google.com/dialogflow/docs/release-notes#December_11_2025
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.