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CVE-2023-33538

Published: Jun 7, 2023Updated: Oct 27, 2025 Sources: CVE List NVD BDUCWE-77
NVD MITRE
8.8CVSSHIGH
EPSS Score
42.6%
Top 1.5%
CISA KEV
Active Exploitation
Since Jun 16, 2025
Exploits
1 Known
Remediation
Patch Available

Description

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 .

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-77

Affected Products

n/an/a
TL-WR940NTP-Link Technologies Co Ltd.Networking Infrastructure
TL-WR841NTP-Link Technologies Co Ltd.Networking Infrastructure
TL-WR740NTP-Link Technologies Co Ltd.Networking Infrastructure
tl-wr940n firmwaretp-linkNetworking Infrastructure
tp-link technologies co ltd.commercialCNNetworking Infrastructureaka tl-wr841n, tl-wr940n, tl-wr886n
tp-linkcommercialTWNetworking Infrastructureaka tp-link, tp link
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Jun 16, 2025
Remediation due:Jul 7, 2025

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.

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.md
github.com
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
web.archive.org
https://www.secpod.com/blog/cisa-issues-warning-on-active-exploitation-of-tp-link-vulnerability-cve-2023-33538/
secpod.com
and 3 more references View all →

Timeline

Published
Jun 7, 2023
Added to CISA KEV
Jun 16, 2025
Last Updated
Oct 27, 2025

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