CVE-2026-100505 Ghidra 9.2 through 12.1.4 Heap Out-of-Bounds Read via StringManager

Medium 4.8 Published 26 Sep 2026 Updated 5 Oct 2026

Attackers can crash the Ghidra decompiler or leak heap memory by crafting malicious binaries with invalid multi-byte character sequences.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-100505?

CVE-2026-100505 is a medium-severity memory corruption vulnerability in NationalSecurityAgency ghidra, published on 26 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Ghidra versions 9.2 through 12.1.4 contain a heap out-of-bounds read vulnerability in StringManager::getCodepoint when decoding multi-byte UTF-8, UTF-16, or UTF-32 characters without validating remaining buffer length. Attackers can craft malicious binaries containing strings or constant byte stores that end in multi-byte lead units to trigger out-of-bounds reads that crash the decompiler or leak adjacent heap memory into decompiled output.

Weakness: CWE-125

Which versions are affected by CVE-2026-100505?

It affects 1 product.

Products include Nsa Ghidra.

How do I fix CVE-2026-100505?

No fix has been published for CVE-2026-100505 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-100505 being exploited?

There is no known exploitation of CVE-2026-100505 in the wild and no public exploit code.

Sources

Also known as GHSA-4xhp-h6c8-q4h9.