CVE-2023-41556Network attack vector

Remote code execution via unbounded list parameter

Published Aug 30, 2023 · Updated Oct 1, 2024

Stack-based buffer overflow in Tenda AC5, AC7, and AC9 affected firmware allows remote attackers to execute code via crafted HTTP requests. The /goform/SetIpMacBind handler processes an oversized list parameter without enforcing the destination stack buffer's bounds in AC5 1.0RTL_V15.03.06.28, AC7 1.0_V15.03.06.44, and AC9 3.0_V15.03.06.42_multi. The network path requires no authentication or user interaction, exposing the router process to attacker-controlled memory corruption and a resulting crash or code execution.

CVSS severity9.8
Critical
EPSS probability1.12%
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 AC5, AC7, and AC9 affected firmware allows remote attackers to execute code via crafted HTTP requests. The /goform/SetIpMacBind handler processes an oversized list parameter without enforcing the destination stack buffer's bounds in AC5 1.0RTL_V15.03.06.28, AC7 1.0_V15.03.06.44, and AC9 3.0_V15.03.06.42_multi. The network path requires no authentication or user interaction, exposing the router process to attacker-controlled memory corruption and a resulting crash or code execution.

The record

CVE
CVE-2023-41556
Published
Aug 30, 2023
Updated
Oct 1, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC7
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 2024Record 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_v15.03.06.44

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC7version=1.0_v15.03.06.44
Shenzhen Tenda Technology Co., Ltd. · AC9version=3.0_v15.03.06.42_multi
Shenzhen Tenda Technology Co., Ltd. · AC5version=1.0rtl_v15.03.06.28

Published CVSS scores

9.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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