Use After Free in Nationalsecurityagency Ghidra
CVE-2026-100503
Ghidra versions through 12.1.4 contain a heap use-after-free vulnerability in the decompiler's Funcdata::opInsertAfter function caused by stale INDIRECT effect-op references. Attackers can craft a malicious binary with a specific x86-64 sequence that triggers the vulnerability during decompilation, causing the decompile helper process to crash and denying service to analysts and automated analysis pipelines.
Vulnerability class: Use-After-Free
Published .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/NationalSecurityAgency/ghidra (product)
- github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178… (technical-description)
- github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178… (technical-description)
- github.com/NationalSecurityAgency/ghidra/commit/5ef1ee4d7a25a65db195f3a70f681ca… (patch)
- www.vulncheck.com/advisories/ghidra-through-12.1.4-heap-use-after-free-in-decom… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100503?
- CVE-2026-100503 is a low-severity vulnerability in Nationalsecurityagency Ghidra, classified under Use After Free. CVSS score: 3.3/10. Published 2026-09-26.
- How severe is CVE-2026-100503?
- Low severity. CVSS v3 base score is 3.3 out of 10.