CVE-2022-40855

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Published Sep 23, 2022 CVSS 3.1 · 9.8 Critical EPSS 14.1% KEV · Not listed

Description

Tenda W20E router V15.11.0.6 contains a stack overflow in the function formSetPortMapping with post request 'goform/setPortMapping/'. This vulnerability allows attackers to cause a Denial of Service (DoS) or Remote Code Execution (RCE) via the portMappingServer, portMappingProtocol, portMappingWan, porMappingtInternal, and portMappingExternal parameters.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:tenda:w20e_firmware:15.11.0.6:*:*:*:*:*:*:*

cpe:2.3:h:tenda:w20e:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: 14.1% (14.074% probability within 30 days)

Exploitation poc

Automatable yes

Technical Impact total

References

Link	Providers
https://github.com/CPSeek/Router-vuls/blob/main/Tenda/W20E/formSetPortMapping.md

History

May 22, 2025 9:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Subscriptions

Tenda W20e W20e Firmware

Weaknesses

CWE-787

Sources

CVE record Updated: May 22, 2025, 8:01 PM

Status: PUBLISHED
Assigner: mitre
Published: Sep 23, 2022, 2:29 PM
Updated: May 22, 2025, 8:01 PM
Reserved: Sep 19, 2022, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 3, 2024, 12:28 PM

Updated: Aug 3, 2024, 12:28 PM

NVD Updated: Jun 17, 2026, 5:02 AM

Status: Modified
Published: Sep 23, 2022, 3:15 PM
Modified: Jun 17, 2026, 5:02 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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