VULNERABILITY INTELLIGENCE

CVE-2017-20228

CVSS score8.6 HIGH
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-03-28
Last modified2026-06-17
CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Description

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.

Weakness classification

  • CWE-787: Out-of-bounds Write

Primary references