CVE-2023-45481Public exploitNetwork attack vector

Code execution via unchecked firewallEn copy

Published Nov 29, 2023 · Updated Jun 5, 2025

Stack-based buffer overflow in Tenda AC10 US_AC10V4.0si_V16.03.10.13_cn allows remote attackers to crash the service or execute code. SetFirewallCfg passes the attacker-controlled firewallEn parameter to strcpy without checking its length, allowing the copy to overwrite its stack buffer. An unauthenticated HTTP request reaches the flaw; the published proof of concept demonstrates a service crash, while code execution is reported but not demonstrated.

CVSS severity9.8
Critical
EPSS probability0.98%
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 US_AC10V4.0si_V16.03.10.13_cn allows remote attackers to crash the service or execute code. SetFirewallCfg passes the attacker-controlled firewallEn parameter to strcpy without checking its length, allowing the copy to overwrite its stack buffer. An unauthenticated HTTP request reaches the flaw; the published proof of concept demonstrates a service crash, while code execution is reported but not demonstrated.

The record

CVE
CVE-2023-45481
Published
Nov 29, 2023
Updated
Jun 5, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC10
Classifications
CWE-121, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 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=us_ac10v4.0si_v16.03.10.13_cn

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC10version=us_ac10v4.0si_v16.03.10.13_cn

Published CVSS scores

9.8CISA ADPCVSS: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-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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