CVE-2025-9298Public exploitNetwork attack vector

Authenticated code execution via unchecked password copy

Published Aug 21, 2025 · Updated Aug 21, 2025

Stack-based buffer overflow in Tenda M3 Access Controller 1.0.0.12 allows remote authenticated users to execute code via a crafted PPPoE password. The formQuickIndex handler passes the user-controlled PPPOEPassword value to sub_46AE0, whose unchecked loop copies it into the stack buffer s without a length check. Management-session access is required; an oversized value can crash the controller or execute code with the web service's privileges.

CVSS severity8.8
High
EPSS probability1.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Tenda M3 Access Controller 1.0.0.12 allows remote authenticated users to execute code via a crafted PPPoE password. The formQuickIndex handler passes the user-controlled PPPOEPassword value to sub_46AE0, whose unchecked loop copies it into the stack buffer s without a length check. Management-session access is required; an oversized value can crash the controller or execute code with the web service's privileges.

The record

CVE
CVE-2025-9298
Published
Aug 21, 2025
Updated
Aug 21, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
M3 Access Controller
Classifications
CWE-121, CWE-119, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 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=1.0.0.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · M3 Access Controllerversion=1.0.0.12

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1190Exploit Public-Facing Application

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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