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CVE-2016-20038

8.6
High
EPSS 0.18%Mar 28, 2026

Stack-based buffer overflow in yTree 1.94-1.1 allows local code execution.

common questions

Is CVE-2016-20038 being exploited?

Not confirmed. CVE-2016-20038 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.18% probability of exploitation in the next 30 days.

How severe is CVE-2016-20038?

CVE-2016-20038 is rated High with a CVSS score of 8.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2016-20038?

Not known from our data. No patch reference has been recorded for CVE-2016-20038, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.

What does CVE-2016-20038 affect?

CVE-2016-20038 affects yTree 1.94-1.1. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2016-20038?

Monitor; upgrade to patched version when available; restrict CLI args.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
yTree 1.94-1.1
impact

Local attacker can overflow the stack via a long CLI arg and execute arbitrary code in the application context.

action required

Monitor only

affected versions
werner yTree
  • affected1.94-1.1

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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