CVE-2023-39747

Name: CVE-2023-39747
Creator: NVD / NIST
Published: 2023-08-21T03:15:11.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 7.85%

Last modified Jun 17, 2026

CVE-2023-39747 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. TP-Link WR841N V8, TP-Link TL-WR940N V2, and TL-WR941ND V5 were discovered to contain a buffer overflow via the radiusSecret parameter at /userRpm/WlanSecurityRpm.. EPSS estimates a 7.85% chance of exploitation in the next 30 days.

Description

TP-Link WR841N V8, TP-Link TL-WR940N V2, and TL-WR941ND V5 were discovered to contain a buffer overflow via the radiusSecret parameter at /userRpm/WlanSecurityRpm.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

7.85%

93.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Tp-Link	Tl-Wr940n V2 Firmware	All versions
Tp-Link	Tl-Wr941nd V5 Firmware	All versions
Tp-Link	Tl-Wr841n V8 Firmware	All versions

References

https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/17/TP-Link%20WR841N%20wireless%20router%20WlanSecurityRpm%20Stack%20Overflow%20vulnerability.mdExploit, Third Party Advisory
https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/17/TP-Link%20WR841N%20wireless%20router%20WlanSecurityRpm%20Stack%20Overflow%20vulnerability.mdExploit, Third Party Advisory

Timeline

Published: Aug 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39747?

TP-Link WR841N V8, TP-Link TL-WR940N V2, and TL-WR941ND V5 were discovered to contain a buffer overflow via the radiusSecret parameter at /userRpm/WlanSecurityRpm.

How severe is CVE-2023-39747?

CVE-2023-39747 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 7.85% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39747?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39747?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST