Security readout for executives and security teams
CVE-2016-20049 is a critical stack-based buffer overflow in Varaneckas JAD Java Decompiler 1.5.8e-1kali1 and prior. The bundle states that oversized input can overflow stack memory and allow arbitrary code execution in the application context. Exposure is most likely where JAD 1.5.8e-1kali1 or prior is installed and processes untrusted or externally supplied input, including automated decompilation workflows or services that invoke JAD on user-controlled files or strings. Do not assume exposure from product presence alone; confirm whether JAD is installed and reachable through any untrusted data path. Treat as high-priority remediation for any environment where JAD processes untrusted input or is reachable through automated services. If JAD is only installed on isolated systems and never handles untrusted data, prioritize inventory and planned replacement, but do not leave the vulnerable version in exposed workflows. Mitigation focus: Remove or disable JAD 1.5.8e-1kali1 and prior wherever it can process untrusted input.; Replace JAD with a supported Java decompiler or a maintained alternative after compatibility testing.; If immediate removal is not possible, isolate JAD in a tightly sandboxed environment with minimal privileges and no direct exposure to untrusted network-facing workflows..
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 lookupCVE-2016-20049 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-42076CVE reference · exploit
- VulnCheck Advisory: JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow Remote Code ExecutionCVE 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.