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CVE-2018-13228

21
FAUCET Score

CVE-2018-13228 is an integer overflow vulnerability affecting the Crowdnext (CNX) Ethereum token smart contract. Specifically, the "sell" function can result in "amount * sellPrice" evaluating to zero, leading to an unintended reduction of a seller's assets. This high-severity vulnerability (CVSS 7.5) is easily exploitable over the network with low attack complexity, allowing an attacker to impact the integrity of transactions without requiring user interaction or privileges. There is currently no evidence of active exploitation, nor is exploit code publicly available in common repositories like Metasploit or ExploitDB, and it has received minimal community discussion or media coverage.

Impacted Technologies

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

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:N/I:H/A:N

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

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 37th percentile among its peer group of 51,553 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 / BlockChainsSecurity/EtherTokens/blob/master/ETHEREUMBLACK/sell%20integer%20overflow.md
ExploitThird Party Advisory
github.com / BlockChainsSecurity/EtherTokens/tree/master/Crowdnext
Third Party Advisory