CVE-2020-19693

CRITICAL

Espruino - Out-of-bounds Write via jswrap_function_replacewith OldFunc Parameter

Title source: llm

Description

An issue found in Espruino Espruino 6ea4c0a allows an attacker to execute arbitrrary code via oldFunc parameter of the jswrap_object.c:jswrap_function_replacewith endpoint.

References (1)

Core 1

Core References

Exploit, Issue Tracking, Patch

https://github.com/espruino/Espruino/issues/1684

Scores

CVSS v3 9.8

EPSS 0.0083

EPSS Percentile 53.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-787

Status published

Products (1)

espruino/espruino 2019-06-28

Published Apr 04, 2023

Tracked Since Feb 18, 2026