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.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
nationalsecurityagency ghidra unaffected
Version Status Constraints
0 affected < 12.1
12.1 unaffected —

No data.

No data.

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Vendors Products
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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/NationalSecurityAgency/ghidra/commit/8a3018d5efcb07d2ec40bacdd6063cb6f01c8edf cve-icon cve-icon
https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-gqh9-2c72-wpjc cve-icon cve-icon cve-icon
https://www.vulncheck.com/advisories/ghidra-heap-use-after-free-in-sleighbuilder-generatepointeradd-via-vector-reallocation cve-icon cve-icon
History

Wed, 10 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 10 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Ghidra < 12.1 - Heap-Use-After-Free in SleighBuilder::generatePointerAdd via Vector Reallocation
First Time appeared Nsa
Nsa ghidra
Weaknesses CWE-416
CPEs cpe:2.3:a:nsa:ghidra:*:*:*:*:*:*:*:*
Vendors & Products Nsa
Nsa ghidra
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-10T13:43:11.156Z

Reserved: 2026-05-31T11:54:34.993Z

Link: CVE-2026-49496

cve-icon Vulnrichment

Updated: 2026-06-10T13:42:09.516Z

cve-icon NVD

Status : Received

Published: 2026-06-10T14:16:34.497

Modified: 2026-06-10T15:16:40.200

Link: CVE-2026-49496

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T14:45:32Z

Weaknesses