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CVE-2018-1166

23
FAUCET Score

CVE-2018-1166 is a local privilege escalation vulnerability affecting Joyent SmartOS release-20170803-20170803T064301Z. It stems from insufficient validation within the SMBIOC_TREE_RELE ioctl, allowing an attacker with low-privileged code execution to elevate privileges to the host OS context. With a CVSS score of 7.8 (High), this vulnerability has low attack complexity and no user interaction required, leading to high impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
20170803CPE matchmatch criteria
cpe:2.3:o:joyent:smartos:20170803:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 70th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

help.joyent.com / hc/en-us/articles/360000124928
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-18-159
Third Party AdvisoryVDB Entry