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ID

VAR-202209-1579


CVE

CVE-2022-40855


TITLE

Shenzhen Tenda Technology Co.,Ltd.  of  W20E  Out-of-bounds write vulnerability in firmware

Trust: 0.8

sources: JVNDB: JVNDB-2022-017871

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. Shenzhen Tenda Technology Co.,Ltd. of W20E An out-of-bounds write vulnerability exists in firmware.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The vulnerability is due to the fact that the formSetPortMapping method does not check the size of the input data when it has a POST request goform/setPortMapping/

Trust: 2.16

sources: NVD: CVE-2022-40855 // JVNDB: JVNDB-2022-017871 // CNVD: CNVD-2022-88206

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2022-88206

AFFECTED PRODUCTS

vendor:tendamodel:w20escope:eqversion:15.11.0.6

Trust: 1.0

vendor:tendamodel:w20escope:eqversion:w20e firmware 15.11.0.6

Trust: 0.8

vendor:tendamodel:w20escope:eqversion: -

Trust: 0.8

vendor:tendamodel:w20escope: - version: -

Trust: 0.8

vendor:tendamodel:w20escope:eqversion:v15.11.0.6

Trust: 0.6

sources: CNVD: CNVD-2022-88206 // JVNDB: JVNDB-2022-017871 // NVD: CVE-2022-40855

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2022-40855
value: CRITICAL

Trust: 1.0

134c704f-9b21-4f2e-91b3-4a467353bcc0: CVE-2022-40855
value: CRITICAL

Trust: 1.0

NVD: CVE-2022-40855
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2022-88206
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202209-2374
value: CRITICAL

Trust: 0.6

CNVD: CNVD-2022-88206
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2022-40855
baseSeverity: CRITICAL
baseScore: 9.8
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 3.9
impactScore: 5.9
version: 3.1

Trust: 2.0

NVD: CVE-2022-40855
baseSeverity: CRITICAL
baseScore: 9.8
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: CNVD: CNVD-2022-88206 // JVNDB: JVNDB-2022-017871 // CNNVD: CNNVD-202209-2374 // NVD: CVE-2022-40855 // NVD: CVE-2022-40855

PROBLEMTYPE DATA

problemtype:CWE-787

Trust: 1.0

problemtype:Out-of-bounds writing (CWE-787) [NVD evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2022-017871 // NVD: CVE-2022-40855

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202209-2374

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202209-2374

PATCH

title:Patch for Tenda W20E formSetPortMapping stack overflow vulnerabilityurl:https://www.cnvd.org.cn/patchInfo/show/372646

Trust: 0.6

title:Tenda W20E Buffer error vulnerability fixurl:http://123.124.177.30/web/xxk/bdxqById.tag?id=209425

Trust: 0.6

sources: CNVD: CNVD-2022-88206 // CNNVD: CNNVD-202209-2374

EXTERNAL IDS

db:NVDid:CVE-2022-40855

Trust: 3.8

db:JVNDBid:JVNDB-2022-017871

Trust: 0.8

db:CNVDid:CNVD-2022-88206

Trust: 0.6

db:CNNVDid:CNNVD-202209-2374

Trust: 0.6

sources: CNVD: CNVD-2022-88206 // JVNDB: JVNDB-2022-017871 // CNNVD: CNNVD-202209-2374 // NVD: CVE-2022-40855

REFERENCES

url:https://github.com/cpseek/router-vuls/blob/main/tenda/w20e/formsetportmapping.md

Trust: 3.0

url:https://nvd.nist.gov/vuln/detail/cve-2022-40855

Trust: 0.8

url:https://cxsecurity.com/cveshow/cve-2022-40855/

Trust: 0.6

sources: CNVD: CNVD-2022-88206 // JVNDB: JVNDB-2022-017871 // CNNVD: CNNVD-202209-2374 // NVD: CVE-2022-40855

SOURCES

db:CNVDid:CNVD-2022-88206
db:JVNDBid:JVNDB-2022-017871
db:CNNVDid:CNNVD-202209-2374
db:NVDid:CVE-2022-40855

LAST UPDATE DATE

2025-05-23T23:19:57.786000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2022-88206date:2022-12-18T00:00:00
db:JVNDBid:JVNDB-2022-017871date:2023-10-17T08:03:00
db:CNNVDid:CNNVD-202209-2374date:2022-09-29T00:00:00
db:NVDid:CVE-2022-40855date:2025-05-22T20:15:25.877

SOURCES RELEASE DATE

db:CNVDid:CNVD-2022-88206date:2022-12-17T00:00:00
db:JVNDBid:JVNDB-2022-017871date:2023-10-17T00:00:00
db:CNNVDid:CNNVD-202209-2374date:2022-09-23T00:00:00
db:NVDid:CVE-2022-40855date:2022-09-23T15:15:14.473