CVE-2020-22884

Name: CVE-2020-22884
Creator: NVD / NIST
Published: 2021-07-13T15:15:08.587+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.83%

Last modified Jun 17, 2026

CVE-2020-22884 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Buffer overflow vulnerability in function jsvGetStringChars in Espruino before RELEASE_2V09, allows remote attackers to execute arbitrary code.. EPSS estimates a 2.83% chance of exploitation in the next 30 days.

Description

Buffer overflow vulnerability in function jsvGetStringChars in Espruino before RELEASE_2V09, allows remote attackers to execute arbitrary code.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.83%

84.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Espruino	Espruino	< 2.09

References

https://github.com/espruino/Espruino/issues/1799Exploit, Third Party Advisory
https://github.com/espruino/Espruino/issues/1799Exploit, Third Party Advisory

Timeline

Published: Jul 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-22884?

Buffer overflow vulnerability in function jsvGetStringChars in Espruino before RELEASE_2V09, allows remote attackers to execute arbitrary code.

How severe is CVE-2020-22884?

CVE-2020-22884 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.83% probability of exploitation in the next 30 days.

How do I fix CVE-2020-22884?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-22884?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST