CVE-2023-40904Network attack vector

Unauthenticated service disruption via MAC-filter stack overflow

Published Aug 24, 2023 · Updated Oct 2, 2024

Stack-based buffer overflow in Tenda AC10 v4 16.03.10.13 allows remote attackers to disrupt the router via a crafted HTTP request. The /goform/setMacFilterCfg handler processes attacker-controlled macFilterType and deviceList values without adequate bounds enforcement, overflowing stack storage. Unauthenticated network access is sufficient to corrupt the firmware process and interrupt the device's management service.

CVSS severity9.8
Critical
EPSS probability0.93%
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 AC10 v4 16.03.10.13 allows remote attackers to disrupt the router via a crafted HTTP request. The /goform/setMacFilterCfg handler processes attacker-controlled macFilterType and deviceList values without adequate bounds enforcement, overflowing stack storage. Unauthenticated network access is sufficient to corrupt the firmware process and interrupt the device's management service.

The record

CVE
CVE-2023-40904
Published
Aug 24, 2023
Updated
Oct 2, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
Tenda AC10 Firmware
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 2, 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=16.03.10.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · Tenda AC10 Firmwareversion=16.03.10.13

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS: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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