Espruino 2v29 (commit bffc6d0) contains a stack-based buffer overflow vulnerability in the JavaScript error stack-trace handling path on 64-bit builds. A remote attacker can supply JavaScript input that triggers an exception and reaches jslPrintTokenLineMarker(), which passes the address of a 4-byte int column variable to jsvGetLineAndCol() as a size_t pointer. jsvGetLineAndCol() performs an 8-byte write through the mismatched pointer, overwriting adjacent stack memory.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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History
Thu, 24 Sep 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Espruino 2v29 (commit bffc6d0) contains a stack-based buffer overflow vulnerability in the JavaScript error stack-trace handling path on 64-bit builds. A remote attacker can supply JavaScript input that triggers an exception and reaches jslPrintTokenLineMarker(), which passes the address of a 4-byte int column variable to jsvGetLineAndCol() as a size_t pointer. jsvGetLineAndCol() performs an 8-byte write through the mismatched pointer, overwriting adjacent stack memory. | |
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-09-24T20:42:22.561Z
Reserved: 2026-09-10T00:00:00.000Z
Link: CVE-2026-88388
Vulnrichment
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NVD
Status : Deferred
Published: 2026-09-24T21:18:57.247
Modified: 2026-09-24T21:25:27.050
Link: CVE-2026-88388
Redhat
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