---
id: CVE-2026-100504
title: >-
  Ghidra versions through 12.1.4 contain a stack-based out-of-bounds write
  vulnerability in the decompiler's leftshift128 function when processing
  negative shift amounts from p-code
summary: >-
  Ghidra versions through 12.1.4 contain a stack-based out-of-bounds write
  vulnerability in the decompiler's leftshift128 function when processing
  negative shift amounts from p-code. Attackers can craft malicious binaries
  with specific ins…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
vendor: NationalSecurityAgency
product: ghidra
affected:
  - ghidra <= 12.1.4
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T01:17:00.043'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100504'
references:
  - url: 'https://github.com/NationalSecurityAgency/ghidra'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc/Ghidra/Features/Decompiler/src/decompile/cpp/multiprecision.cc#L29-L61
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc/Ghidra/Features/Decompiler/src/decompile/cpp/ruleaction.cc#L7848-L7878
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NationalSecurityAgency/ghidra/commit/6babe3c1cec7f5ec920dd16cdc86a02893e5b33c
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/ghidra-through-12.1.4-stack-based-buffer-overflow-via-leftshift128
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T01:24:36.885Z'
---

## Overview

Ghidra versions through 12.1.4 contain a stack-based out-of-bounds write vulnerability in the decompiler's leftshift128 function when processing negative shift amounts from p-code. Attackers can craft malicious binaries with specific instruction sequences that trigger the overflow when decompiled, corrupting memory and potentially achieving code execution.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.