CVE-2025-12623Public exploitNetwork attack vector

Account impersonation via phone-number session tokens

Published Nov 3, 2025 · Updated Nov 3, 2025

Authentication bypass in fuint at commit 41e26be8a2c609413a0feaa69bdad33a71ae8032 allows remote authenticated users to impersonate users. ClientSignController generates a session token during account login, immediately replaces it with the user's mobile number, and stores that predictable value in Redis. Exploitation requires knowledge of the victim's phone number and a live token entry, granting access to protected client API data and actions as that user.

CVSS severity3.1
Low
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in fuint at commit 41e26be8a2c609413a0feaa69bdad33a71ae8032 allows remote authenticated users to impersonate users. ClientSignController generates a session token during account login, immediately replaces it with the user's mobile number, and stores that predictable value in Redis. Exploitation requires knowledge of the victim's phone number and a live token entry, granting access to protected client API data and actions as that user.

The record

CVE
CVE-2025-12623
Published
Nov 3, 2025
Updated
Nov 3, 2025
Vendor
Beijing Kaite Weiye Science and Technology Co., Ltd.
Product
fuint
Classifications
CWE-639, CWE-285, T1550.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=41e26be8a2c609413a0feaa69bdad33a71ae8032

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Beijing Kaite Weiye Science and Technology Co., Ltd. · fuintversion=41e26be8a2c609413a0feaa69bdad33a71ae8032

Published CVSS scores

1.3VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
3.1VulDBCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
2.1VulDBAV:N/AC:H/Au:S/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CWE-285Improper Authorization
T1550.001Application Access Token

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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