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CVE-2018-13356

27
FAUCET Score

CVE-2018-13356 describes an improper access control vulnerability in TerraMaster TOS version 3.1.03, specifically within the ajaxdata.php component, allowing authenticated attackers to elevate user permissions. This high-severity vulnerability (CVSS 8.8) is easily exploitable over the network with low attack complexity, potentially leading to full compromise of confidentiality, integrity, and availability. While the EPSS score indicates a low probability of exploitation, there is currently no public exploit code available in Metasploit or ExploitDB, and it is not listed on the KEV catalog, suggesting no active exploitation or significant community discussion.

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

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.01%
Probability of exploitation in next 30 days
EPSS Percentile
78.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0201 is in the 77th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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