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Ax1803 Firmware CVE-2023-49040

CRITICAL
Command Injection (CWE-77)
2023-11-27 cve@mitre.org
RCE Command Injection Tenda Ax1803 Firmware
9.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
CWE-77
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Command injection prevention
MITRE ATT&CK

1 technique across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived

A remote attacker could inject arbitrary commands into system command execution by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.
Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
No patch listed yet 1.5% exploitation probability (EPSS)

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AnalysisAI

An issue in Tneda AX1803 v.1.0.0.1 allows a remote attacker to execute arbitrary code via the adslPwd parameter in the form_fast_setting_internet_set function. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use parameterized APIs, avoid shell execution, validate input with strict allowlists.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. An issue in Tneda AX1803 v.1.0.0.1 allows a remote attacker to execute arbitrary code via the adslPwd parameter in the form_fast_setting_internet_set function. Affected products include: Tenda Ax1803 Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

An issue in Tneda AX1803 v.1.0.0.1 allows a remote attacker to execute arbitrary code via the adslPwd parameter in the form_fast_setting_internet_set function.

Threat Intelligence Overview

EPSS Score
1.5%
Top 28% exploitable
Exploit
POC
Public exploit code exists
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC Yes
EPSS 1.5%
Patch available No
Active threat No
Deciding rule
CRITICAL severity + public POC available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

71
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS Command Injection CRITICAL

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:o:tenda:ax1803_firmware:1.0.0.1:*:*:*:*:*:*:*

More in Ax1803 Firmware

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CVE-2023-51972 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 was discovered to contain a command injection vulnerability via the function fromAdvSetLanIp. Rate
CVE-2023-51970 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.mode parameter in the function formSetIptv. Rated criti
CVE-2023-51969 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function getIptvInfo. Rated crit
CVE-2023-51968 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stballvlans parameter in the function getIptvInfo. Rate
CVE-2023-51967 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.port parameter in the function getIptvInfo. Rated criti
CVE-2023-51962 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.mode parameter in the function setIptvInfo. Rated criti
CVE-2023-51963 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function setIptvInfo. Rated crit
CVE-2023-51965 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stbpvid parameter in the function setIptvInfo. Rated cr
CVE-2023-51964 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.port parameter in the function setIptvInfo. Rated criti
CVE-2023-51960 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function formGetIptv. Rated crit
CVE-2023-51959 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stbpvid parameter in the function formGetIptv. Rated cr
CVE-2023-51958 CRITICAL POC
9.8 Jan 10

Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.port parameter in the function formGetIptv. Rated criti

Same weakness CWE-77 – Command Injection

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CVE-2024-55956 CRITICAL POC
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CVE-2015-2051 HIGH POC
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CVE-2017-6327 HIGH POC
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CVE-2023-34960 CRITICAL POC
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Same technique RCE

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CVE-2012-4681 CRITICAL POC
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CVE-2023-3519 CRITICAL POC
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CVE-2015-5119 CRITICAL POC
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CVE-2016-4117 CRITICAL POC
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CVE-2015-3113 CRITICAL POC
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