CVE-2026-115503: Ghidra before 12.2 contains an improper handling of highly compressed data vulnerability in ExtensionUtils.unz

Q: How do I fix CVE-2026-115503?

ghidra: upgrade to 12.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-115503 being exploited?

CVE-2026-115503 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-2026-115503 affect?

CVE-2026-115503 affects ghidra. Severity is medium (CVSS 5.5). Ghidra before 12.2 contains an improper handling of highly compressed data vulnerability in ExtensionUtils.unzipToInstallationFolder() that allows attackers to exhaust disk space. Attackers can persuade users to install a crafted zip bomb e

Q: How urgent is CVE-2026-115503?

Priority 20/100. No elevated risk signals yet.

Routine

MEDIUM 5.5UPGRADE

CVE-2026-115503 is a medium-severity flaw (CVSS 5.5) affecting ghidra. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Ghidra before 12.2 contains an improper handling of highly compressed data vulnerability in ExtensionUtils.unzipToInstallationFolder() that allows attackers to exhaust disk space. Attackers can persuade users to install a crafted zip bomb extension archive that expands without size limits, causing later writes by Ghidra and other applications to fail.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-409
Published	2026-10-22
Last modified	2026-10-29

Publisher (CNA): VulnCheck · Vendor: nsa

Last updated 2026-10-29 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-22 20:17 UTCPublished CVE record published
2026-10-29 17:28 UTCUpdated Record last modified

nsa ghidra UPGRADE

Affected: < 12.2

Fixed in: 12.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 12.2 (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-2026-115503?

ghidra: upgrade to 12.2. Exact commands for each OS are on this page.

Is CVE-2026-115503 being exploited?

CVE-2026-115503 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-2026-115503 affect?

CVE-2026-115503 affects ghidra. Severity is medium (CVSS 5.5). Ghidra before 12.2 contains an improper handling of highly compressed data vulnerability in ExtensionUtils.unzipToInstallationFolder() that allows attackers to exhaust disk space. Attackers can persuade users to install a crafted zip bomb e

How urgent is CVE-2026-115503?

Priority 20/100. No elevated risk signals yet.

Related CVEs

CVE-2026-115397 MEDIUM 5.5 UPGRADE Ghidra before 12.2 contains a resource allocation without limits vulnerability in ExtensionUtils.unzipToInstal
CVE-2026-115398 MEDIUM 5.5 UPGRADE Ghidra before 12.2 contains a resource allocation without limits vulnerability in FileSystemIndexHelper used b
CVE-2026-115396 MEDIUM 5.5 UPGRADE Ghidra 10.3 before 12.2 contains an improper handling of highly compressed data vulnerability in ThemeReader.p
CVE-2026-115395 MEDIUM 5.5 UPGRADE Ghidra 10.3 before 12.2 contains a resource allocation without limits vulnerability in ThemeReader.readZipThem
CVE-2026-115394 MEDIUM 5.5 UPGRADE Ghidra through 12.2 contains an uncontrolled memory allocation vulnerability in BinaryField.read() that allows

References

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