CVE-2021-41653
The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 76.0%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 76.05% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- tp-link/tl-wr840n firmware
- Source
- cve@mitre.org
EPSS 76.0% since 26 October 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.
References
- https://k4m1ll0.com/cve-2021-41653.htmlExploit, Third Party Advisory
- https://www.tp-link.com/us/press/security-advisory/Vendor Advisory
- https://k4m1ll0.com/cve-2021-41653.htmlExploit, Third Party Advisory
- https://www.tp-link.com/us/press/security-advisory/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.