CVE-2020-22079
9.8
CRITICAL · CVSS 3.1 · EPSS 4.2% (pctl 91)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
Stack-based buffer overflow in Tenda AC-10U AC1200 Router US_AC10UV1.0RTL_V15.03.06.48_multi_TDE01 allows remote attackers to execute arbitrary code via the timeZone parameter to goform/SetSysTimeCfg.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.17% — more likely to be exploited than 91% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-10-29 |
| Last modified | 2026-06-17 |
Affected (4)
| Vendor | Product |
|---|---|
| tendacn | ac10u |
| tendacn | ac10u firmware |
| tendacn | ac9 |
| tendacn | ac9 firmware |
References
- https://cwe.mitre.org/data/definitions/121.html
- https://github.com/1sd3d/Tendown/tree/master/PoCs/Auth/bof11
- https://github.com/Lyc-heng/routers/blob/main/routers/stack1.md
- https://cwe.mitre.org/data/definitions/121.html
- https://github.com/1sd3d/Tendown/tree/master/PoCs/Auth/bof11
- https://github.com/Lyc-heng/routers/blob/main/routers/stack1.md
→ the Explorer · watch your stack · NVD