The determineWinner function of a smart contract implementation for HashHeroes Tiles, an…
Priority LOW 35CWE-330Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
The determineWinner function of a smart contract implementation for HashHeroes Tiles, an Ethereum game, uses a certain blockhash value in an attempt to generate a random number for the case where NUM_TILES equals the number of people who purchased a tile, which allows an attacker to control the awarding of the prize by being the last person to purchase a tile.
Why it matters now
EPSS 0.00926 60th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hashheroes:hashheroes:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Hashheroes |
- cpe:2.3:a:hashheroes:hashheroes:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Hashheroes
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-17987
- 2026-10-03 Alias added: GHSA-23fj-gx6v-3x6c
References
Sources
- CVE-2018-17987 · CVE Program
- CVE-2018-17987 · NVD
- FIRST EPSS
- GHSA-23fj-gx6v-3x6c · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences