CVE-2025-9523Public exploitNetwork attack vector

Service crash via unbounded mac parameter copy

Published Aug 27, 2025 · Updated Aug 27, 2025

Stack-based buffer overflow in Tenda AC1206 15.03.06.23 allows remote attackers to crash the router HTTP service via a crafted mac parameter. GetParentControlInfo passes the mac value to strcpy, which copies it into pc_info->mac_addr without checking the destination size. Unauthenticated network access is sufficient, and the published proof demonstrates a service interruption rather than code execution.

CVSS severity9.8
Critical
EPSS probability1.10%
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 crash the router HTTP service via a crafted mac parameter. GetParentControlInfo passes the mac value to strcpy, which copies it into pc_info->mac_addr without checking the destination size. Unauthenticated network access is sufficient, and the published proof demonstrates a service interruption rather than code execution.

The record

CVE
CVE-2025-9523
Published
Aug 27, 2025
Updated
Aug 27, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC1206
Classifications
CWE-119, CWE-121, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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/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
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
T1499.004Application or System Exploitation

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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