CVE-2018-12885

Name: CVE-2018-12885
Creator: NVD / NIST
Published: 2018-08-07T15:29:00.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.39%

Last modified Jun 17, 2026

CVE-2018-12885 is a vulnerability of currently unknown severity. The randMod() function of the smart contract implementation for MyCryptoChamp, an Ethereum game, generates a random value with publicly readable variables such as the current block information and a private variable, (which can be read with a getStorageAt call). Therefore, attackers can get powerful champs/items and get rewards.. EPSS estimates a 1.39% chance of exploitation in the next 30 days.

Description

The randMod() function of the smart contract implementation for MyCryptoChamp, an Ethereum game, generates a random value with publicly readable variables such as the current block information and a private variable, (which can be read with a getStorageAt call). Therefore, attackers can get powerful champs/items and get rewards.

Metrics

EPSS Probability

1.39%

68.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-338

Affected Software

Vendor	Product	Versions
Mycryptochamp	Mycryptochamp	All versions

References

https://etherscan.io/address/0x689FB61845488297dfE7586E5f7956475955d2DcThird Party Advisory
https://etherscan.io/address/0xa44e464b13280340904ffef0a65b8a0033460430Third Party Advisory
https://medium.com/coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8dfExploit, Third Party Advisory
https://etherscan.io/address/0x689FB61845488297dfE7586E5f7956475955d2DcThird Party Advisory
https://etherscan.io/address/0xa44e464b13280340904ffef0a65b8a0033460430Third Party Advisory
https://medium.com/coinmonks/get-legendary-items-by-breaking-pnrg-of-mycyptochamp-an-ethereum-online-game-cve-2018-12855-6e6beb41b8dfExploit, Third Party Advisory

Timeline

Published: Aug 7, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12885?

How severe is CVE-2018-12885?

Severity scoring for CVE-2018-12885 is pending analysis. The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12885?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-12885?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST