CVE-2017-20228 HIGH

CVE-2017-20228: Flat Assembler 1.71.21 Stack-Based Buffer Overflow ROP

Vendor Flatassembler
Product Flat Assembler
Weakness CWE-787
Published March 28, 2026
Last update March 30, 2026

CVSS base score

8.6/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Flat Assembler 1.71.21 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying oversized input to the application. Attackers can craft malicious assembly input exceeding 5895 bytes to overwrite the instruction pointer and execute return-oriented programming chains for shell command execution.

Key dates

02Disclosure timeline

March 28, 2026 CVE published
March 30, 2026 Record updated