CVE-2021-45392 in the critical feed json
A Buffer Overflow vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the sub_422CE4 function in page /goform/setIPv6Status via th…
published 2022-02-14 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32165
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 12.3%
- EPSS 12.3% chance of exploitation in 30 days, percentile 96%
- public exploits
- 0
- none known
Summary
A Buffer Overflow vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the sub_422CE4 function in page /goform/setIPv6Status via the prefixDelegate parameter, which causes a Denial of Service.
Exploit prediction
12.29% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/sec-bin/IoT-CVE/tree/main/Tenda/AX12/2 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/sec-bin/IoT-CVE/tree/main/Tenda/AX12/2
exploit, third-party-advisory
-
tenda.com.cn
/
vendor-advisory
-
tenda.com.cn
/product/AX12.html
product, vendor-advisory
-
tendawifi.com
/index.html
broken-link
Sources
- CVE List CVE-2021-45392
- NVD CVE-2021-45392
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.