CVE-2026-123203
Medium
Description
NEURON (CoreNEURON) through 9.0.2 contains a stack buffer overflow vulnerability that allows attackers to corrupt stack memory by supplying over-long tokens in a crafted model dataset. Attackers can place oversized version or mechanism-name tokens in bbcore_mech.dat, globals.dat, or files.dat loaded by nrniv-core to crash the process.
SeverityMedium
CVSS6.1
Exploit probability4. percentile0.1%
ProductNEURON
PublishedNov 5, 2026
First seenNov 5, 2026
Weakness typeCWE-121CWE-121
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| neuronsimulator NEURON | v ≤ 9.0.2 | — |
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