CVE-2023-47455Public exploitNetwork attack vector

Service crash via unchecked heap copies

Published Nov 7, 2023 · Updated Oct 28, 2024

Heap overflow in Tenda AX1806 firmware 1.0.0.1 allows remote attackers to crash the router via a crafted HTTP request. The setSchedWifi function passes unchecked schedStartTime and schedEndTime values to strcpy operations targeting offsets in a heap allocation. The published proof of concept demonstrates a router crash, while no code-execution outcome is documented.

CVSS severity9.1
Critical
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap overflow in Tenda AX1806 firmware 1.0.0.1 allows remote attackers to crash the router via a crafted HTTP request. The setSchedWifi function passes unchecked schedStartTime and schedEndTime values to strcpy operations targeting offsets in a heap allocation. The published proof of concept demonstrates a router crash, while no code-execution outcome is documented.

The record

CVE
CVE-2023-47455
Published
Nov 7, 2023
Updated
Oct 28, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AX1806 Firmware
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 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

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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-787Out-of-bounds Write
T1499.004Endpoint Denial of Service: Application 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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