CVE-2021-44632 json
A Buffer Overflow vulnerability exists in TP-LINK WR-886N 20190826 2.3.8 in the /cloud_config/router_post/upgrade_info feature, which allow…
published 2022-03-09 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31453
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
A Buffer Overflow vulnerability exists in TP-LINK WR-886N 20190826 2.3.8 in the /cloud_config/router_post/upgrade_info feature, which allows malicious users to execute arbitrary code on the system via a crafted post request.
Exploit prediction
2.58% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/Yu3H0/IoT_CVE/tree/main/886N/upgradeInfoRegister 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-120 Buffer Copy without Checking Size of Input
References
-
github.com
/Yu3H0/IoT_CVE/tree/main/886N/upgradeInfoRegister
exploit, third-party-advisory
Sources
- CVE List CVE-2021-44632
- NVD CVE-2021-44632
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