CVE-2026-100505: Ghidra versions 9.2 through 12.1.4 contain a heap out-of-bounds read vulnerability in StringManager::getCodepo

Routine

MEDIUM 4.4UPGRADE

CVE-2026-100505 is a medium-severity flaw (CVSS 4.4) affecting ghidra. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.4 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 96%)
CISA exploited list	No
Weakness	CWE-125
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 16:24 UTCUpdated Record last modified

nsa ghidra UPGRADE

Affected: >= 9.2 and <= 12.1.4

Fixed in: newer than 12.1.4

Safe to downgrade to: a release before 9.2

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.

3. If no update is available yet, DOWNGRADE to a release before 9.2 (Debian / Ubuntu)

apt-cache madison ghidra sudo apt install ghidra=<VERSION_BEFORE_9.2> sudo apt-mark hold ghidra

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ghidra sudo dnf downgrade ghidra-<VERSION_BEFORE_9.2> sudo dnf versionlock add ghidra

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-100505?

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

Is CVE-2026-100505 being exploited?

CVE-2026-100505 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-2026-100505 affect?

CVE-2026-100505 affects ghidra. Severity is medium (CVSS 4.4). 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 m

How urgent is CVE-2026-100505?

Priority 16/100. No elevated risk signals yet.

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References

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