CVE-2020-13393

CRITICAL
9.8
CVSS Score
Published: May 22, 2020 at 04:06 PM UTC
Updated: June 17, 2026 at 02:53 AM UTC
8 products affected across 1 vendorAC6 FirmwareAC15 FirmwareAC18 Firmware

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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%

Description

An issue was discovered on Tenda AC6 V1.0 V15.03.05.19_multi_TD01, AC9 V1.0 V15.03.05.19(6318)_CN, AC9 V3.0 V15.03.06.42_multi, AC15 V1.0 V15.03.05.19_multi_TD01, and AC18 V15.03.05.19(6318_)_CN devices. There is a buffer overflow vulnerability in the router's web server -- httpd. While processing the /goform/saveParentControlInfo deviceId and time parameters for a POST request, a value is directly used in a strcpy to a local variable placed on the stack, which overwrites the return address of a function. An attacker can construct a payload to carry out arbitrary code execution attacks.

Affected

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

tendacn-ac18 (same device)
All versions
All versions
80%
All versions
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 (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-120

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