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CVE-2018-17071

24
FAUCET Score

CVE-2018-17071 describes a critical vulnerability in the Lucky9io Ethereum gambling game's smart contract. The flaw allows attackers to manipulate the lottery outcome by exploiting a predictable random number generation based on a publicly readable "private" variable (entry_number) and purchasing tickets at a low price due to an incorrect currency unit setting. This vulnerability has a CVSS score of 7.5 (High), indicating a network-exploitable flaw with no user interaction required, leading to high confidentiality impact. While there is no evidence of active exploitation, public exploit code, or significant community discussion, the nature of the flaw allows attackers to consistently win rewards.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:lucky9:lucky9io:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0121 is in the 44th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

github.com / TEAM-C4B/CVE-LIST/tree/master/CVE-2018-17071
ExploitThird Party Advisory