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CVE-2018-13338

33
FAUCET Score

CVE-2018-13338 is a critical system command injection vulnerability affecting TerraMaster TOS version 3.1.03. Attackers can exploit this flaw by injecting commands into the "username" parameter during user creation via ajaxdata.php. With a CVSS score of 9.8 (CRITICAL), this vulnerability allows unauthenticated attackers to execute arbitrary system commands with high impact on confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the high FAUCET Risk Score of 90/100 indicates significant potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
3.1.03CPE matchmatch criteria
cpe:2.3:o:terra-master:terramaster_operating_system:3.1.03:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
10.23%
Probability of exploitation in next 30 days
EPSS Percentile
95.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1023 is in the 91st percentile among its peer group of 36,897 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

blog.securityevaluators.com / vulnerabilities-in-terramaster-tos-3-1-03-fb99cf88b86a
ExploitThird Party Advisory