High severity · published Jun 7, 2023
CVE-2023-33538
TP-Link Multiple Routers Command Injection Vulnerability
In wildKEV
8.8
CVSS
41.6%
EPSS
Yes
On KEV
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
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)41.6% · higher than 99% of CVEs
Exploited in the wildYes
CISA KEVListed Jun 16, 2025
Federal remediation dueJul 7, 2025
Ransomware campaign useNot known
Affected products
Which versions
TF
Tl-wr740n Firmware · Tp-link
All versions, or not specified · source: NVD
TF
Tl-wr841n Firmware · Tp-link
All versions, or not specified · source: NVD
TF
Tl-wr940n Firmware · Tp-link
All versions, or not specified · source: NVD
MR
Multiple Routers · TP-Link
All versions, or not specified · source: KEV
In the news
VulnerabilityHigh
CVE-2023-33538 under attack for a year, but exploitation still unsuccessful
Hackers have targeted CVE-2023-33538 flaw in old TP-Link routers for a year, but no successful exploitation has been seen so far. Hackers have been trying for over a year to exploit a serious flaw, tracked as CVE-2023-33538 (CVSS score of 8.8), in outdated TP-Link routers, but so far without success. The vulnerability is a command […]
Apr 20, 2026·Security Affairs
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-33538
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-33538
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
github.com
https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.md
web.archive.org
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
www.secpod.com
https://www.secpod.com/blog/cisa-issues-warning-on-active-exploitation-of-tp-link-vulnerability-cve-2023-33538/
More from Tl-wr740n Firmware
7.5
CVE-2015-3035
TP-Link Multiple Archer Devices Directory Traversal Vulnerability
6.5
CVE-2023-50224
TP-Link TL-WR841N dropbearpwd Improper Authentication Information Disclosure Vulnerability
8.1
CVE-2023-33537
TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a buffer overflow via the component /userRpm/FixMapCfgRpm
8.1
CVE-2023-33536
TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a buffer overflow via the component /userRpm/WlanMacFilterRpm
7.7
CVE-2023-36356
TP-Link TL-WR940N V2/V4/V6, TL-WR841N V8, TL-WR941ND V5, and TL-WR740N V1/V2 were discovered to contain a buffer read out-of-bounds via the component /userRpm/VirtualServerRpm