CVE-2018-20201 — There is a stack-based buffer over-read in the jsfNameFromString function of jsflash.c in Espruino 2V00, leading to a denial of service or possibly unspecified other impact via a crafted js file

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HIGH

There is a stack-based buffer over-read in the jsfNameFromString function of jsflash.c in Espruino 2V00, leading to a denial of service or possibly unspecified other impact via a crafted js file

Published Dec 18, 2018

7.8

HIGH

CVSS 3.0

EPSS 1.07%

Description

There is a stack-based buffer over-read in the jsfNameFromString function of jsflash.c in Espruino 2V00, leading to a denial of service or possibly unspecified other impact via a crafted js file.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.07% 0.01073

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01073

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (11 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.07% (0.01073)	63.67th	v5 (v2026.06.15)
Sep 20, 2026	1.07% (0.01073)	63.44th	v5 (v2026.06.15)
Jul 20, 2024	0.08% (0.00081)	35.12th	v3 (v2023.03.01)
Apr 25, 2024	0.08% (0.00081)	33.72th	v3 (v2023.03.01)
Mar 15, 2024	0.07% (0.00072)	29.19th	v3 (v2023.03.01)
Feb 8, 2024	0.07% (0.00066)	26.53th	v3 (v2023.03.01)
Mar 7, 2023	0.09% (0.00091)	37.19th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.52% (0.00518)	11.68th	v5 (v2026.06.15)
Apr 14, 2021	0.52% (0.00518)	0.00th	v1

Weaknesses (1)

CWE-125

Out-of-bounds Read

References (1)

https://github.com/espruino/Espruino/issues/1587
x_refsource_MISCExploitThird Party Advisory

Link	Providers	Tags
https://github.com/espruino/Espruino/issues/1587		x_refsource_MISCExploitThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Dec 18, 2018

Updated Sep 16, 2024

Reserved Dec 18, 2018

Link CVE-2018-20201

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-20201

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-20201