CVE-2026-49496: Ghidra before 12.1 contains a heap-use-after-free vulnerability in SleighBuilder::generatePointerAdd caused by

Q: How do I fix CVE-2026-49496?

ghidra: upgrade to 12.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-49496 being exploited?

CVE-2026-49496 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-2026-49496 affect?

CVE-2026-49496 affects ghidra. Severity is medium (CVSS 6.1). Ghidra before 12.1 contains a heap-use-after-free vulnerability in SleighBuilder::generatePointerAdd caused by iterator invalidation when PcodeCacher::allocateInstruction reallocates the issued vector. Attackers can trigger memory corruptio

Q: How urgent is CVE-2026-49496?

Priority 28/100. Public exploit reference

Routine

MEDIUM 6.1UPGRADE

CVE-2026-49496 is a medium-severity flaw (CVSS 6.1) affecting ghidra. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Ghidra before 12.1 contains a heap-use-after-free vulnerability in SleighBuilder::generatePointerAdd caused by iterator invalidation when PcodeCacher::allocateInstruction reallocates the issued vector. Attackers can trigger memory corruption by decompiling malicious binaries through the public Sleigh::oneInstruction C++ API, affecting downstream SLEIGH library consumers.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-416
Published	2026-06-10
Last modified	2026-10-26

Publisher (CNA): VulnCheck · Vendor: nsa

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-10 14:16 UTCPublished CVE record published
2026-10-26 11:10 UTCUpdated Record last modified

nsa ghidra UPGRADE

Affected: < 12.1

Fixed in: 12.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 12.1 (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-2026-49496?

ghidra: upgrade to 12.1. Exact commands for each OS are on this page.

Is CVE-2026-49496 being exploited?

CVE-2026-49496 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-2026-49496 affect?

CVE-2026-49496 affects ghidra. Severity is medium (CVSS 6.1). Ghidra before 12.1 contains a heap-use-after-free vulnerability in SleighBuilder::generatePointerAdd caused by iterator invalidation when PcodeCacher::allocateInstruction reallocates the issued vector. Attackers can trigger memory corruptio

How urgent is CVE-2026-49496?

Priority 28/100. Public exploit reference

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References

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