TP-LINK TL-WR940N/TL-WR841N/TL-WR740N /userRpm/WlanNetworkRpm command injection

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in TP-LINK TL-WR940N, TL-WR841N and TL-WR740N. The impacted element is an unknown function of the file /userRpm/WlanNetworkRpm. Such manipulation leads to command injection. This vulnerability is documented as CVE-2023-33538. The attack requires being on the local network. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in TP-LINK TL-WR940N, TL-WR841N and TL-WR740N (Router Operating System) (the affected version unknown). Affected by this issue is an unknown part of the file /userRpm/WlanNetworkRpm. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a command injection vulnerability via the component /userRpm/WlanNetworkRpm .

The weakness was released 06/07/2023. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-33538 since 05/22/2023. Technical details as well as a exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

It is declared as attacked. This issue was added on 06/16/2025 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 07/07/2025:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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

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Productinfo

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License

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.7

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

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

05/22/2023 🔍
06/07/2023 +16 days 🔍
06/07/2023 +0 days 🔍
06/16/2025 +740 days 🔍

Sourcesinfo

Vendor: tp-link.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2023-33538 (🔍)
GCVE (CVE): GCVE-0-2023-33538
GCVE (VulDB): GCVE-100-230996
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/07/2023 08:27
Updated: 06/16/2025 22:20
Changes: 06/07/2023 08:27 (38), 07/05/2023 16:43 (11), 01/07/2025 19:42 (27), 06/16/2025 22:20 (15)
Complete: 🔍
Cache ID: 216::103

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