Is CVE-2026-100504 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-100504 being exploited in the wild.

How severe is CVE-2026-100504?

High severity, with a CVSS score of 7, published 26 September 2026.

Which products and versions are affected?

National Security Agency Ghidra through 12.1.4.

Is there a fix for CVE-2026-100504?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-100504 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-100504?

Check whether you run National Security Agency Ghidra at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-100504: Ghidra stack-based buffer overflow in decompiler leftshift128 function

CVE-2026-100504 · Severity: high · CVSS 7 · Published 2026-09-26

Ghidra is a reverse engineering framework used by security researchers to analyze malware and understand software behavior. A stack-based buffer overflow in the decompiler can be triggered by processing specially crafted binaries, potentially allowing an attacker to execute arbitrary code on a researcher's machine when analyzing a malicious binary.

Technologies: National Security Agency Ghidra. Vendors: National Security Agency.

Quick answers

Is CVE-2026-100504 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-100504 being exploited in the wild.
How severe is CVE-2026-100504?: High severity, with a CVSS score of 7, published 26 September 2026.
Which products and versions are affected?: National Security Agency Ghidra through 12.1.4.
Is there a fix for CVE-2026-100504?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-100504 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-100504?: Check whether you run National Security Agency Ghidra at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a stack-based out-of-bounds write in the leftshift128 function within the decompiler component, triggered when processing negative shift amounts from p-code operations. Attackers can craft binaries with specific instruction sequences that trigger the overflow during decompilation, corrupting stack memory and potentially achieving code execution. The vulnerability affects versions through 12.1.4 and requires the victim to open a malicious binary in Ghidra's decompiler.

Affected products

National Security Agency Ghidra through 12.1.4

Timeline

2026-09-26: disclosed

References

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