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CVE-2018-12885

22
FAUCET Score

CVE-2018-12885 describes a vulnerability in the MyCryptoChamp Ethereum game, specifically within its smart contract's randMod() function. This function generated "random" values using publicly accessible blockchain data and a private variable that could be read, allowing attackers to predict outcomes. The vulnerability has a medium severity CVSS score of 5.9 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N), indicating a network-based attack with high impact on confidentiality due to attackers gaining powerful in-game assets. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

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

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0139 is in the 41st percentile among its peer group of 19,954 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

etherscan.io / address/0x689FB61845488297dfE7586E5f7956475955d2Dc
Third Party Advisory
etherscan.io / address/0xa44e464b13280340904ffef0a65b8a0033460430
Third Party Advisory
medium.com / coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8df
ExploitThird Party Advisory