CVE-2025-11899Network attack vector

Unauthenticated account access via hard-coded verification key

Published Oct 17, 2025 · Updated Oct 17, 2025

Authentication bypass in Flowring Technology Agentflow 4.0 allows remote attackers to log in as any user by forging verification data. The authentication workflow trusts verification information generated with a fixed cryptographic key embedded in the product. Exploitation requires a target user ID and grants that user's application access; the published material does not identify the affected function or verification-data format.

CVSS severity9.2
Critical
EPSS probability0.63%
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 Flowring Technology Agentflow 4.0 allows remote attackers to log in as any user by forging verification data. The authentication workflow trusts verification information generated with a fixed cryptographic key embedded in the product. Exploitation requires a target user ID and grants that user's application access; the published material does not identify the affected function or verification-data format.

The record

CVE
CVE-2025-11899
Published
Oct 17, 2025
Updated
Oct 17, 2025
Vendor
Flowring Technology Corp.
Product
Agentflow
Classifications
CWE-321, CAPEC-114, T1606
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 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=4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Flowring Technology Corp. · Agentflowversion=4.0

Published CVSS scores

9.2TWCERT/CCCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1TWCERT/CCCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-321Use of Hard-coded Cryptographic Key
CAPEC-114Authentication Abuse
T1606Forge Web Credentials

Public exploit references

No public exploit references are available in this record.

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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