CVE-2018-11239 (GCVE-0-2018-11239)

Vulnerability from cvelistv5 – Published: 2018-05-19 18:00 – Updated: 2024-08-05 08:01
VLAI Previdian
Summary
An integer overflow in the _transfer function of a smart contract implementation for Hexagon (HXG), an Ethereum ERC20 token, allows attackers to accomplish an unauthorized increase of digital assets by providing a _to argument in conjunction with a large _value argument, as exploited in the wild in May 2018, aka the "burnOverflow" issue.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • n/a
Assigner
References
Date Public
2018-05-19 00:00
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 349eb63a-7922-4bfd-9917-e8725d0e8bb0

Vulnerability ID: CVE-2018-11239

Status: Confirmed

Status Updated: 2018-05-19 20:00 CEST

Exploited: Yes

Timestamps
First Seen: 2018-05-19
Asserted: 2018-05-19
Scope
Notes: An integer overflow in the _transfer function of a smart contract implementation for Hexagon (HXG), an Ethereum ERC20 token, allows attackers to... | Affected: Hexagon / HXG (Ethereum ERC20 token) | CVSS: 7.5 (HIGH) | EPSS: 0.00912 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title An integer overflow in the _transfer function of a smart contract implementation for Hexagon (HXG), an Ethereum ERC20 token, allows attackers to...
Cve Id CVE-2018-11239
Vendor Hexagon
Ghsa Id None
Product HXG (Ethereum ERC20 token)
Added Date 2018-05-19T18:00:00.000Z
Cvss Score 7.5
Epss Score 0.00912
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.58566
Used In Malware unknown
Vulnerability Id CVE-2018-11239
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.