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CVE-2018-13217

21
FAUCET Score

CVE-2018-13217 describes an integer overflow vulnerability in the sell function of the CoinToken smart contract, affecting the cointoken_project. This high-severity flaw (CVSS 7.5) allows an attacker to manipulate the "amount * sellPrice" calculation to zero, thereby reducing a seller's assets without authorization. While no active exploitation or public exploit code is known, and community discussion is minimal, the vulnerability could lead to significant financial loss for users of the affected token.

Impacted Technologies

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

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
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
58.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 34th 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 / BlockChainsSecurity/EtherTokens/blob/master/ETHEREUMBLACK/sell%20integer%20overflow.md
Third Party Advisory
github.com / BlockChainsSecurity/EtherTokens/tree/master/CoinToken
Third Party Advisory