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I29 Firmware CVE-2023-50983

CRITICAL
Command Injection (CWE-77)
2023-12-20 cve@mitre.org
9.8
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
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.

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. EPSS exploitation probability: 2.29%.

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 2.3% exploitation probability (EPSS)

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AnalysisAI

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a command injection vulnerability via the sysScheduleRebootSet 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

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. Tenda i29 v1.0 V1.0.0.5 was discovered to contain a command injection vulnerability via the sysScheduleRebootSet function. Affected products include: Tenda I29 Firmware.

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

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a command injection vulnerability via the sysScheduleRebootSet function.

Threat Intelligence Overview

EPSS Score
2.3%
Top 19% exploitable
Exploit
POC
Public exploit code exists
Data Quality
5 sources
Confidence: Medium

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 2.3%
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 occurs when an application passes unsanitized user input directly into system shell commands.

Affected Products (CPE)NVD

cpe:2.3:o:tenda:i29_firmware:1.0.0.2:*:*:*:*:*:*:*
cpe:2.3:o:tenda:i29_firmware:1.0.0.5:*:*:*:*:*:*:*
CVE-2023-50989 CRITICAL POC
9.8 Dec 20

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a command injection vulnerability via the pingSet function. Rated crit

CVE-2023-50991 HIGH POC
7.5 Jan 05

Buffer Overflow vulnerability in Tenda i29 versions 1.0 V1.0.0.5 and 1.0 V1.0.0.2, allows remote attackers to cause a de

CVE-2023-50992 CRITICAL POC
9.8 Dec 20

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a stack overflow via the ip parameter in the setPing function. Rated c

CVE-2023-50990 CRITICAL POC
9.8 Dec 20

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a buffer overflow via the rebootTime parameter in the sysScheduleReboo

CVE-2023-50988 CRITICAL POC
9.8 Dec 20

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a buffer overflow via the bandwidth parameter in the wifiRadioSetIndoo

CVE-2023-50987 CRITICAL POC
9.8 Dec 20

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a buffer overflow via the time parameter in the sysTimeInfoSet functio

CVE-2023-50986 CRITICAL POC
9.8 Dec 20

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a buffer overflow via the time parameter in the sysLogin function. Rat

CVE-2023-50985 CRITICAL POC
9.8 Dec 20

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a buffer overflow via the lanGw parameter in the lanCfgSet function. R

CVE-2023-50984 CRITICAL POC
9.8 Dec 20

Tenda i29 v1.0 V1.0.0.5 was discovered to contain a buffer overflow via the ip parameter in the spdtstConfigAndStart fun

CVE-2024-35338 CRITICAL POC
9.8 Jul 16

Tenda i29V1.0 V1.0.0.5 was discovered to contain a hardcoded password for root. Rated critical severity (CVSS 9.8), this

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