CVE-2023-49040Public exploitNetwork attack vector

Unauthenticated code execution via adslPwd command injection

Published Nov 27, 2023 · Updated Oct 10, 2024

Command injection in Tenda AX1803 firmware 1.0.0.1 allows remote attackers to execute arbitrary code through a crafted adslPwd value. The form_fast_setting_internet_set handler evaluates shell substitution embedded in adslPwd from a POST to /goform/fast_setting_internet_set. The published assessment requires no privileges or user interaction, and successful exploitation runs attacker-chosen commands with the router service's privileges.

CVSS severity9.8
Critical
EPSS probability1.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Tenda AX1803 firmware 1.0.0.1 allows remote attackers to execute arbitrary code through a crafted adslPwd value. The form_fast_setting_internet_set handler evaluates shell substitution embedded in adslPwd from a POST to /goform/fast_setting_internet_set. The published assessment requires no privileges or user interaction, and successful exploitation runs attacker-chosen commands with the router service's privileges.

The record

CVE
CVE-2023-49040
Published
Nov 27, 2023
Updated
Oct 10, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AX1803
Classifications
CWE-77, CAPEC-248, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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. · AX1803version=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 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 exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CAPEC-248Command Injection
T1059.004Command and Scripting Interpreter: Unix Shell

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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