CISA KEV · Known exploitedCritical

CVE-2018-14558

Tenda AC7, AC9, and AC10 Routers

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.

CVSS: 9.8
EPSS: 8.67%
CISA KEV: Listed
Published: 2018.10.31

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability8.67%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Tenda AC7, AC9, and AC10 Routers
Affected versions: <= 15.03.06.44_cn, <= 15.03.05.19\(6318\)_cn, <= 15.03.06.23_cn
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03

1
Identify
Confirm that Tenda AC7, AC9, and AC10 Routers and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-78
KEV added: 2021.11.03
Ransomware use: 미확인