---
cve: "CVE-2026-100504"
severity: "HIGH"
cvss: 7.3
epss: "0.1%"
vendor: "NationalSecurityAgency"
kev: false
exploited: false
published: "2026-09-26 01:17:00"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-27T10:36:34+02:00"
---

# CVE-2026-100504

> 7.3 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- 8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc (Commit)
- 6babe3c1cec7f5ec920dd16cdc86a02893e5b33c (Commit)

## Referenzen

- <https://github.com/NationalSecurityAgency/ghidra/commit/6babe3c1cec7f5ec920dd16cdc86a02893e5b33c>
- <https://github.com/NationalSecurityAgency/ghidra>
- <https://github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc/Ghidra/Features/Decompiler/src/decompile/cpp/multiprecision.cc#L29-L61>
- <https://github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc/Ghidra/Features/Decompiler/src/decompile/cpp/ruleaction.cc#L7848-L7878>
- <https://www.vulncheck.com/advisories/ghidra-through-12.1.4-stack-based-buffer-overflow-via-leftshift128>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-100504) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_