What is CVE-2021-46393?

CVE-2021-46393 is a critical-severity vulnerability in Tenda Ax3, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-03-04.

How severe is CVE-2021-46393?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Tenda Ax3

CVE-2021-46393

There is a stack buffer overflow vulnerability in the formSetPPTPServer function of Tenda-AX3 router V16.03.12.10_CN. The v10 variable is directly retrieved from the http request parameter startIp. Then v10 will be splice to stack by funct…

Vulnerability class: Buffer Overflow

EPSS: 0.159 (96.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tenda Ax3
Tenda Ax3_firmware — versions 16.03.12.10
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-46393?: CVE-2021-46393 is a critical-severity vulnerability in Tenda Ax3, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-03-04.
How severe is CVE-2021-46393?: Critical severity. CVSS v3 base score is 9.8 out of 10.