CVE-2026-123203

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Source

https://cve.org/CVERecord?id=CVE-2026-123203

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-123203.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-123203

Published

2026-11-05T18:16:39Z

Modified

2026-11-05T21:32:46Z

Severity

6.9 (Medium) CVSS_V4 - 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 CVSS Calculator

Summary

NEURON through 9.0.2 Stack-based Buffer Overflow via CoreNEURON dataset tokens

Details

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.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-121"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123203.json"
}

References

Affected packages

Git / github.com/neuronsimulator/nrn

Affected ranges

Type

GIT

Repo

https://github.com/neuronsimulator/nrn

Events

Introduced

Last Affected

ba5783378c0aa1d9ac95b4454bea94b15c63f75d

Fixed

6e5a6578a3503c44ee0f19593e7ffb19812ef0e1

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "9.0.2"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "6e5a6578a3503c44ee0f19593e7ffb19812ef0e1"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

Other

1665alpha

7.*

7.6.0

7.6.1

7.6.2

7.6.3

7.6.4

7.6.5

7.7.0

7.7.1

7.8.0

8.*

8.0.dev

8.0a

8.1a

8.2.dev

8.2a

9.*

9.0.0

9.0.1

9.0.1.rc1

9.0.2

9.0.dev

9.0.rc1

9.0a

9.1.0.dev0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-123203.json"