Medium 6.1Published Jun 10, 2026

CVE-2026-49496Ghidra < 12.1 - Heap-Use-After-Free in SleighBuilder::generatePointerAdd via Vector Reallocation

Updated under an hour ago (Oct 27, 2026, 9:40 PM ET)

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Exploited in the last 30 days

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.

CVSS: 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

nationalsecurityagency ghidra nationalsecurityagency:ghidra (from the name)	before 12.1; 12.1 not affected	CNA record
nsa ghidra nsa:ghidra	before 12.1	NVD

References

References

https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-gqh9-2c72-wpjc	vendor-advisory, exploit
https://github.com/NationalSecurityAgency/ghidra/commit/8a3018d5efcb07d2ec40bacdd6063cb6f01c8edf	patch
https://www.vulncheck.com/advisories/ghidra-heap-use-after-free-in-sleighbuilder-generatepointeradd-via-vector-reallocation	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.