CVE-2023-42320Public exploitNetwork attack vector

Unauthenticated HTTP service crash via unchecked MAC length

Published Sep 18, 2023 · Updated Sep 25, 2024

Stack overflow in Tenda AC10 V4 US_AC10V4.0si_V16.03.10.13_cn_TDC01 allows remote attackers to crash the HTTP service. GetParentControlInfo passes the user-controlled mac parameter to a stack buffer without checking its length, and a long POST value triggers a segmentation fault. No credentials or user interaction are required, and successful exploitation interrupts access to the router's HTTP management service.

CVSS severity9.8
Critical
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in Tenda AC10 V4 US_AC10V4.0si_V16.03.10.13_cn_TDC01 allows remote attackers to crash the HTTP service. GetParentControlInfo passes the user-controlled mac parameter to a stack buffer without checking its length, and a long POST value triggers a segmentation fault. No credentials or user interaction are required, and successful exploitation interrupts access to the router's HTTP management service.

The record

CVE
CVE-2023-42320
Published
Sep 18, 2023
Updated
Sep 25, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC10 v4.0
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=v.ac10v4.0si_v16.03.10.13_cn_tdc01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC10 v4.0version=v.ac10v4.0si_v16.03.10.13_cn_tdc01

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 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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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Technologies

Your stack

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Your stack

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