CVE-2018-14558
· published 2018-10-30
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2021-11-03).
- CISA's name for it: Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability
- CISA's description: Tenda AC7, AC9, and AC10 devices contain a command injection vulnerability due to the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input. Successful exploitation allows an attacker to execute OS commands via a crafted goform/setUsbUnload request.
- Known ransomware campaign use, per CISA: Unknown
Source: CISA KEV catalog (CC0 1.0).
Description
Description by MITRE via the CVE Program.
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.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a: affected |
Products named in NVD's CPE match criteria (3)
cpe:2.3:o:tenda:ac7_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:tenda:ac10_firmware:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 9.8 CRITICAL — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.1: 9.8 CRITICAL — as published by CISA-ADP (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0: 10 HIGH — as published by NIST (Primary)
AV:N/AC:L/Au:N/C:C/I:C/A:C - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: yes · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.md
- https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.md
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-14558
Source dates: published 2018-10-30, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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