CVE-2021-29280 json
In TP-Link Wireless N Router WR840N an ARP poisoning attack can cause buffer overflow
published 2021-08-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15917
- cvss
- 6.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
In TP-Link Wireless N Router WR840N an ARP poisoning attack can cause buffer overflow
Exploit prediction
0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/deadlysnowman3308/upgraded-ARP-Poisoning referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.4 | CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H |
| NVD | 2.0 | 4.3 | AV:A/AC:M/Au:N/C:N/I:P/A:P |
Classification
- Weakness
-
- CWE-668 Exposure of Resource to Wrong Sphere
References
-
github.com
/deadlysnowman3308/upgraded-ARP-Poisoning
exploit, third-party-advisory
-
hackingvila.wordpress.com
/2021/04/28/upgraded-arp-poisoning-tool/
third-party-advisory
Sources
- CVE List CVE-2021-29280
- NVD CVE-2021-29280
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