CVE-2021-31758

CRITICAL
9.8
CVSS Score
Published: May 7, 2021 at 10:01 PM UTC
Updated: June 17, 2026 at 03:52 AM UTC
2 products affected across 1 vendorAC11 FirmwareAc11

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Severity
CRITICAL9.8
Exploit prediction
EPSS 7%

Description

An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setportList allows attackers to execute arbitrary code on the system via a crafted post request.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 2.03.01.104_cn
tenda-ac11 (same device)
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCExploitIssue TrackingThird Party Advisory
https://github.com/Yu3H0/IoT_CVE/tree/main/Tenda/CVE_2

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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