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CVE-2021-42659

MEDIUM

6.5

CVSS Score

Published: May 24, 2022 at 11:41 AM UTC

Updated: June 17, 2026 at 04:09 AM UTC

2 products affected across 1 vendorAC9 FirmwareTenda AC9

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.8%

Description

There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi. When setting the virtual service, the httpd program will crash and exit when the super-long list parameter occurs.

Affected

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

AC9 Firmware · Tenda

95%

15.03.05.19(6318)15.03.06.42_multi

Tenda AC9 · Tendadevice

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)

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://github.com/Lyc-heng/routers/blob/main/routers/stack4.md

x_refsource_MISCThird Party Advisory

Source: [email protected]

https://www.cnvd.org.cn/flaw/show/CNVD-2021-24948

CVSS

6.5MEDIUM[email protected]

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-119

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