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W18E Firmware CVE-2025-29218

MEDIUM
Stack-based Buffer Overflow (CWE-121)
2025-03-20 cve@mitre.org
6.5
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Stack buffer bounds checking
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 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.21%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

Tenda W18E v2.0 v16.01.0.11 was discovered to contain a stack overflow in the wifiPwd parameter at /goform/setModules. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, 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. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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 under CWE-121. Tenda W18E v2.0 v16.01.0.11 was discovered to contain a stack overflow in the wifiPwd parameter at /goform/setModules. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request. Affected products include: Tenda W18E Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Lifecycle Timeline

2
PoC Detected
Mar 26, 2025 - 18:23 vuln.today
Public exploit code
CVE Published
Mar 20, 2025 - 19:15 nvd
MEDIUM 6.5

DescriptionCVE.org

Tenda W18E v2.0 v16.01.0.11 was discovered to contain a stack overflow in the wifiPwd parameter at /goform/setModules. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.

Executive ViewAI

Why It Matters

Organizations using Tenda W18E v2.0 v16.01.0.11 should be aware of notable risk from CVE-2025-29218, a stack-based buffer overflow vulnerability rated CVSS 6.5. Exploitation could cause memory corruption or application crashes. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Moderate
Compensating Controls

Apply vendor patch. If patching is delayed: enable ASLR/DEP, apply network segmentation.

Threat Intelligence Overview

EPSS Score
0.2%
Top 57% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 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 MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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

Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
No

Priority Score

52
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:o:tenda:w18e_firmware:16.01.0.11:*:*:*:*:*:*:*
CVE-2025-45343 CRITICAL POC
9.8 May 28

An issue in Tenda W18E v.2.0 v.16.01.0.11 allows an attacker to execute arbitrary code via the editing functionality of

CVE-2023-46370 CRITICAL POC
9.8 Oct 25

Tenda W18E V16.01.0.8(1576) has a command injection vulnerability via the hostName parameter in the formSetNetCheckTools

CVE-2023-46369 CRITICAL POC
9.8 Oct 25

Tenda W18E V16.01.0.8(1576) contains a stack overflow vulnerability via the portMirrorMirroredPorts parameter in the for

CVE-2024-46435 HIGH POC
8.0 Feb 10

A stack overflow vulnerability in the Tenda W18E V16.01.0.8(1625) web management portal allows an authenticated remote a

CVE-2025-29217 MEDIUM POC
6.5 Mar 20

Tenda W18E v2.0 v16.01.0.11 was discovered to contain a stack overflow in the wifiSSID parameter at /goform/setModules.

CVE-2024-46437 MEDIUM POC
6.5 Feb 10

A sensitive information disclosure vulnerability in the Tenda W18E V16.01.0.8(1625) web management portal allows an unau

CVE-2025-3203 MEDIUM
5.3 Apr 04

A vulnerability classified as problematic was found in Tenda W18E 16.01.0.11. Rated medium severity (CVSS 5.3), this vul

CVE-2024-46436 HIGH POC
8.3 Feb 10

Hardcoded credentials in Tenda W18E V16.01.0.8(1625) allows unauthenticated remote attackers to gain root access to the

CVE-2024-46434 HIGH POC
8.8 Feb 10

Tenda W18E V16.01.0.8(1625) suffers from authentication bypass in the web management portal allowing an unauthorized rem

CVE-2024-46433 HIGH POC
8.8 Feb 10

A default credentials vulnerability in Tenda W18E V16.01.0.8(1625) allows unauthenticated remote attackers to access the

CVE-2024-46432 HIGH POC
8.8 Feb 10

Tenda W18E V16.01.0.8(1625) is vulnerable to Incorrect Access Control. Rated high severity (CVSS 8.8), this vulnerabilit

CVE-2024-46431 HIGH POC
8.0 Feb 10

Tenda W18E V16.01.0.8(1625) is vulnerable to Buffer Overflow. Rated high severity (CVSS 8.0), this vulnerability is low

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