CVE-2020-22079

9.8 criticalEPSS 4.2%

Critical (9.8) in tendacn. EPSS 4.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 4.2% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2021-10-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

tendacn:ac10u_firmware
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

Check your stack JSON