CVE-2022-40876

9.8 criticalEPSS 2.4%

Critical (9.8) in tenda ax1803 firmware. EPSS 2.4% chance of exploitation in the next 30 days.

In Tenda ax1803 v1.0.0.1, the http requests handled by the fromAdvSetMacMtuWan functions, wanSpeed, cloneType, mac, can cause a stack overflow and enable remote code execution (RCE).

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: 2.4% chance of exploitation in the next 30 days; higher than 83% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2022-10-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

tenda:ax1803_firmware

References

https://www.cnblogs.com/L0g4n-blog/p/16695155.html
https://www.cnblogs.com/L0g4n-blog/p/16704071.html
https://www.cnblogs.com/L0g4n-blog/p/16695155.html
https://www.cnblogs.com/L0g4n-blog/p/16704071.html

Check your stack JSON