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CVE-2018-14558

73
FAUCET Score

CVE-2018-14558 is a critical command injection vulnerability affecting Tenda AC7, AC9, and AC10 routers, allowing attackers to execute arbitrary operating system commands through a crafted goform/setUsbUnload request due to improper input validation. With a CVSS score of 9.8, this network-exploitable flaw requires no user interaction and can lead to complete compromise of confidentiality, integrity, and availability. The vulnerability is actively exploited in the wild, as confirmed by its presence in CISA's KEV catalog, and has garnered significant community discussion, despite a lack of public exploit code on platforms like Metasploit or ExploitDB. Its high EPSS score and FAUCET Risk Score of 100/100 underscore the urgent need for mitigation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 15.03.06.44_cnCPE matchmatch criteria
cpe:2.3:o:tenda:ac7_firmware:*:*:*:*:*:*:*:*
<= 15.03.05.19\(6318\)_cnCPE matchmatch criteria
cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*
<= 15.03.06.23_cnCPE matchmatch criteria
cpe:2.3:o:tenda:ac10_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.67%
Probability of exploitation in next 30 days
EPSS Percentile
94.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Nov 3, 2021
This CVE's current EPSS score of 0.0867 is in the 90th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
github.com / zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.md
Broken LinkExploitThird Party Advisory