Security readout for executives and security teams
Plain-English summary
CVE-2019-25157 is an access-control flaw in Ethex Contracts' Monthly Jackpot handler, EthexJackpot.sol. The available record says a remote attacker with low privileges could manipulate behavior affecting integrity. Version boundaries are unavailable because the product does not use versioning, so exposure depends on whether this specific contract code is deployed or reused.
Executive priority
Prioritize assessment if your organization deployed or inherited Ethex jackpot contract code. The public severity is medium, but smart-contract integrity issues can have higher business impact depending on funds, permissions, and immutability.
Technical view
The vulnerability is mapped to CWE-284 for improper access controls in EthexJackpot.sol. The CVSS v3.1 score is 4.3, with network access, low attack complexity, low privileges required, no user interaction, and low integrity impact. The cited fix is GitHub commit 6b8664b698d3d953e16c284fadc6caeb9e58e3db.
Likely exposure
Exposure appears limited to deployments or forks of Ethex Contracts using the vulnerable Monthly Jackpot EthexJackpot.sol code. The sources do not identify affected releases, package versions, deployed contract addresses, or downstream projects.
Exploitation context
The CVE says remote attack is possible and privileges are required. It is not listed in CISA KEV, and the provided sources do not establish active exploitation or public exploit availability.
Researcher notes
Evidence is thin: VulDB and CVE identify the file, component, CWE, CVSS, and patch commit, but not precise vulnerable lines, affected versions, deployed addresses, or exploit activity. Confidence is limited by missing versioning and deployment context.
Mitigation direction
- Identify whether EthexJackpot.sol is deployed, forked, or embedded in your environment.
- Apply or backport commit 6b8664b698d3d953e16c284fadc6caeb9e58e3db where applicable.
- Check vendor, CVE, and VulDB guidance for any later remediation notes.
- Treat unversioned contract copies as individually assessed assets.
Validation and detection
- Compare local or deployed EthexJackpot.sol code with the cited patch commit.
- Confirm jackpot handler access-control paths match the patched logic.
- Inventory dependent contracts or forks that reused the same source.
- Document whether any deployed immutable contract requires migration rather than patching.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2019-25157 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://vuldb.com/?id.248271CVE reference · vdb-entry
- https://vuldb.com/?ctiid.248271CVE reference · signature, permissions-required
- https://bitcointalk.org/index.php?topic=5120151.msg50827730#msg50827730CVE reference · related
- https://github.com/ethex-bet/ethex-contracts/commit/6b8664b698d3d953e16c284fadc6caeb9e58e3dbCVE reference · patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.