CVE-2023-36355
TP-Link TL-WR940N V4 was discovered to contain a buffer overflow via the ipStart parameter at /userRpm/WanDynamicIpV6CfgRpm.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 31.7%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
TP-Link TL-WR940N V4 was discovered to contain a buffer overflow via the ipStart parameter at /userRpm/WanDynamicIpV6CfgRpm. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted GET request.
- CVSS 3.1
- 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 31.73% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · first 3 July 2023
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- tp-link/tl-wr940n firmware
- Source
- cve@mitre.org
EPSS 31.7% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/173294/TP-Link-TL-WR940N-4-Buffer-Overflow.html
- https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/9/TP-Link%20TL-WR940N%20wireless%20router%20userRpmWanDynamicIpV6CfgRpm%20buffer%20write%20out-of-bounds%20vulnerability.mdExploit, Third Party Advisory
- http://packetstormsecurity.com/files/173294/TP-Link-TL-WR940N-4-Buffer-Overflow.html
- https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/9/TP-Link%20TL-WR940N%20wireless%20router%20userRpmWanDynamicIpV6CfgRpm%20buffer%20write%20out-of-bounds%20vulnerability.mdExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.