CVE-2025-10432Public exploitNetwork attack vector

Unauthenticated code execution via unchecked wanMTU copy

Published Sep 15, 2025 · Updated Sep 15, 2025

Stack-based buffer overflow in Tenda AC1206 15.03.06.23 allows remote attackers to execute code or crash the router via wanMTU. The check_param_changed function passes attacker-controlled wanMTU data to strcpy, copying it into the eight-byte wan_param->wan_mtu stack buffer without a bounds check. The HTTP handler is reachable without authentication, and oversized POST data can corrupt the stack, enabling code execution or service interruption.

CVSS severity9.8
Critical
EPSS probability1.58%
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 AC1206 15.03.06.23 allows remote attackers to execute code or crash the router via wanMTU. The check_param_changed function passes attacker-controlled wanMTU data to strcpy, copying it into the eight-byte wan_param->wan_mtu stack buffer without a bounds check. The HTTP handler is reachable without authentication, and oversized POST data can corrupt the stack, enabling code execution or service interruption.

The record

CVE
CVE-2025-10432
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC1206
Classifications
CWE-119, CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=15.03.06.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC1206version=15.03.06.23

Published CVSS scores

8.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
9.8VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0VulDBAV:N/AC:L/Au:N/C:C/I:C/A:C

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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