Shenzhen Yipu WDR201A WiFi Extender up to 1.02 wireless.cgi set_wifi_basic sz11gChannel/PIN os command injection

CVSS Meta Temp Score
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CTI Interest Score
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9.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Shenzhen Yipu WDR201A WiFi Extender up to 1.02. Affected by this vulnerability is the function set_wifi_basic of the file wireless.cgi. The manipulation of the argument sz11gChannel/PIN results in os command injection. This vulnerability is known as CVE-2026-41922. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Shenzhen Yipu WDR201A WiFi Extender up to 1.02. Affected is the function set_wifi_basic of the file wireless.cgi. The manipulation of the argument sz11gChannel/PIN with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the wireless.cgi binary that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the sz11gChannel or PIN POST parameters. Attackers can exploit unsanitized parameter handling in the set_wifi_basic and set_wifi_do_wps functions to achieve remote code execution without authentication.

The weakness was published by Matteo Strada and Daniele Berardinelli. The advisory is shared for download at mstreet97.github.io. This vulnerability is traded as CVE-2026-41922 since 04/22/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/27/2026). The MITRE ATT&CK project declares the attack technique as T1202.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-27117). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.8

VulDB Base Score: 9.8
VulDB Temp Score: 9.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/22/2026 CVE reserved
05/04/2026 +12 days Advisory disclosed
05/04/2026 +0 days VulDB entry created
05/27/2026 +23 days VulDB entry last update

Sourcesinfo

Advisory: mstreet97.github.io
Researcher: Matteo Strada, Daniele Berardinelli
Status: Not defined

CVE: CVE-2026-41922 (🔒)
GCVE (CVE): GCVE-0-2026-41922
GCVE (VulDB): GCVE-100-361020
EUVD: 🔒

Entryinfo

Created: 05/04/2026 22:52
Updated: 05/27/2026 07:36
Changes: 05/04/2026 22:52 (69), 05/05/2026 03:04 (1), 05/27/2026 07:36 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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