CVE-2024-40415Public exploitNetwork attack vector

Memory corruption via unchecked static-route list

Published Jul 15, 2024 · Updated Aug 2, 2024

Stack-based buffer overflow in Tenda AX1806 firmware 1.0.0.1 allows remote attackers to corrupt memory via a crafted route list. The SetStaticRouteCfg handler passes the POST list parameter through fromSetRouteStatic to an sscanf call in sub_519F4 without checking its length, overflowing a stack buffer. No authentication or user interaction is required; the published proof of concept establishes the overflow trigger but does not demonstrate code execution.

CVSS severity9.8
Critical
EPSS probability0.46%
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 AX1806 firmware 1.0.0.1 allows remote attackers to corrupt memory via a crafted route list. The SetStaticRouteCfg handler passes the POST list parameter through fromSetRouteStatic to an sscanf call in sub_519F4 without checking its length, overflowing a stack buffer. No authentication or user interaction is required; the published proof of concept establishes the overflow trigger but does not demonstrate code execution.

The record

CVE
CVE-2024-40415
Published
Jul 15, 2024
Updated
Aug 2, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AX1806 Firmware
Classifications
CWE-120, CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 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=1.0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AX1806 Firmwareversion=1.0.0.1

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

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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