CVE-2021-41653 in the critical feed json
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 executio…
published 2021-11-13 4 y ago modified 2026-07-09 4 mo ago also EUVD-2021-28665
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 76.0%
- EPSS 76.0% chance of exploitation in 30 days, percentile 99.5%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
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.
Exploit prediction
76.05% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template TP-Link - OS Command Injection nuclei detection template
- k4m1ll0.com https://k4m1ll0.com/cve-2021-41653.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
k4m1ll0.com
/cve-2021-41653.html
exploit, third-party-advisory
-
tp-link.com
/us/press/security-advisory/
vendor-advisory
Sources
- CVE List CVE-2021-41653
- NVD CVE-2021-41653
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.