CVE-2016-20038 — yTree 1.94-1.1 Stack-Based Buffer Overflow

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HIGH

yTree 1.94-1.1 Stack-Based Buffer Overflow

Published Mar 28, 2026

8.6

HIGH

CVSS 4.0

EPSS 0.18%

Description

yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode and a return address to overwrite the stack and execute code in the application context.

Affected products

Vendor Werner Product yTree Default
n/a
- Version
  1.94-1.1
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Werner

yTree

n/a

Version	Status	Constraints
1.94-1.1	affected	-

Remediation

No remediation recorded yet.

Metrics

0.18% 0.00177

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00177

Score over time

Mar–Oct 2026

EPSS v4
EPSS v5

Percentile over time

EPSS v4
EPSS v5

Table of values (3 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.18% (0.00177)	6.57th	v5 (v2026.06.15)
Jun 15, 2026	0.18% (0.00177)	7.45th	v5 (v2026.06.15)
Mar 28, 2026	0.01% (0.00013)	2.15th	v4 (v2025.03.14)

Weaknesses (1)

CWE-787

Out-of-bounds Write

References (3)

http://www.han.de/~werner/ytree.html
product
https://www.exploit-db.com/exploits/39406
exploit
https://www.vulncheck.com/advisories/ytree-stack-based-buffer-overflow
third-party-advisory

Link	Providers	Tags
http://www.han.de/~werner/ytree.html		product
https://www.exploit-db.com/exploits/39406		exploit
https://www.vulncheck.com/advisories/ytree-stack-based-buffer-overflow		third-party-advisory