CVE-2023-33538 : TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to

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 .

Published 2023-06-07 04:15:11

Updated 2025-06-17 15:54:05

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2023-33538

Tp-link » Tl-wr841n Firmware » Version: N/A
cpe:2.3:o:tp-link:tl-wr841n_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Tp-link » Tl-wr841n » Version: 8.0
When used together with: Tp-link » Tl-wr841n » Version: 10.0
Tp-link » Tl-wr740n Firmware » Version: N/A
cpe:2.3:o:tp-link:tl-wr740n_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Tp-link » Tl-wr740n » Version: 1.0
When used together with: Tp-link » Tl-wr740n » Version: 2.0
Tp-link » Tl-wr940n Firmware » Version: N/A
cpe:2.3:o:tp-link:tl-wr940n_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Tp-link » Tl-wr940n » Version: 2.0
When used together with: Tp-link » Tl-wr940n » Version: 4.0

CVE-2023-33538 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

TP-Link Multiple Routers Command Injection Vulnerability

CISA required action:

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

CISA description:

TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 contain a command injection vulnerability via the component /userRpm/WlanNetworkRpm. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

Notes:

https://www.tp-link.com/nordic/support/faq/3562/ ; https://nvd.nist.gov/vuln/detail/CVE-2023-33538

Added on 2025-06-16 Action due date 2025-07-07

Exploit prediction scoring system (EPSS) score for CVE-2023-33538

EPSS FAQ

90.99%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 100 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-33538

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
8.8	HIGH	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	2.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0	2025-01-07
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
8.8	HIGH	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	2.8	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2023-33538

CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')

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.
Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2023-33538

https://www.tp-link.com/us/support/faq/3562/

Product
https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.md

iotvul/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.md at main · a101e-IoTvul/iotvul · GitHub
Exploit;Third Party Advisory;Broken Link
https://web.archive.org/web/20230609111043/https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.md

Exploit;Third Party Advisory