CVE-2026-100504: Ghidra versions through 12.1.4 contain a stack-based out-of-bounds write vulnerability in the decompiler's lef

Q: How do I fix CVE-2026-100504?

ghidra: upgrade to newer than 12.1.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-100504 being exploited?

CVE-2026-100504 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-100504 affect?

CVE-2026-100504 affects ghidra. Severity is high (CVSS 7.0). 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 instru

Routine

HIGH 7.0UPGRADE

CVE-2026-100504 is a high-severity flaw (CVSS 7.0) affecting ghidra. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.0 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 95%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-09-26
Last modified	2026-10-08

Publisher (CNA): VulnCheck · Vendor: nsa

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-26 01:17 UTCPublished CVE record published
2026-10-08 16:30 UTCUpdated Record last modified

nsa ghidra UPGRADE

Affected: <= 12.1.4

Fixed in: newer than 12.1.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ghidra || rpm -q ghidra || ghidra --version

2. UPGRADE to newer than 12.1.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ghidra

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ghidra

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-100504?

ghidra: upgrade to newer than 12.1.4. Exact commands for each OS are on this page.

Is CVE-2026-100504 being exploited?

CVE-2026-100504 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-100504 affect?

CVE-2026-100504 affects ghidra. Severity is high (CVSS 7.0). 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 instru

How urgent is CVE-2026-100504?

Priority 26/100. High severity

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References

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