Security readout for executives and security teams
CVE-2017-20227 is a critical stack-based buffer overflow in Varaneckas JAD Java Decompiler 1.5.8e, with the bundle describing 1.5.8e and prior as affected. If an attacker can get overly long malicious input processed by the jad command, the vulnerability may allow arbitrary code execution. The bundle includes a public exploit reference, but KEV is false and the provided sources do not establish active exploitation in the wild. Systems are most likely exposed where JAD Java Decompiler 1.5.8e or prior is installed and used to process attacker-controlled input. Higher-risk deployments include automated analysis, build, upload, or backend workflows that invoke JAD on untrusted artifacts. This deployment context is an inference from the command-line processing described in the bundle, not a separate sourced product list. Treat as urgent where JAD is installed in automated or remotely reachable workflows that process untrusted input. For isolated analyst workstations or legacy offline tooling, prioritize inventory and removal or replacement, then document residual risk. Mitigation focus: Inventory environments for Varaneckas JAD Java Decompiler 1.5.8e and older builds.; If present, remove or disable JAD where it is not operationally required.; Do not process untrusted input with affected JAD versions; isolate any unavoidable use in a constrained sandbox with minimal privileges..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupExecution behavior lookup
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Open ATT&CK lookupCVE-2017-20227 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-42255CVE reference · exploit
- VulnCheck Advisory: JAD 1.5.8e-1kali1 Stack-Based Buffer OverflowCVE reference · third-party-advisory
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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.