CVE-2021-31627 - Vulnerability Details - OpenCVE

Description

Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the index parameter.

Published: 2021-10-29

Score: 8.8 High

EPSS: 1.1% Low

KEV: No

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:tendacn:ac9_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tendacn:ac9:3.0:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:tendacn:ac9_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tendacn:ac9:1.0:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-18516	Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the index parameter.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Adjacent Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.01144.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/Lyc-heng/routers/blob/main/routers/stack3.md

History

No history.

Subscriptions

Tendacn Ac9 Ac9 Firmware

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-10-29T10:32:17.000Z

Updated: 2026-07-09T00:13:25.446Z

Reserved: 2021-04-23T00:00:00.000Z

Link: CVE-2021-31627

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-10-29T11:15:08.433

Modified: 2026-07-09T01:16:52.897

Link: CVE-2021-31627

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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