CVE-2021-36535

Name: CVE-2021-36535
Creator: NVD / NIST
Published: 2023-02-03T18:15:10.653+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2021-36535 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Buffer Overflow vulnerability in Cesanta mJS 1.26 allows remote attackers to cause a denial of service via crafted .js file to mjs_set_errorf.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

Buffer Overflow vulnerability in Cesanta mJS 1.26 allows remote attackers to cause a denial of service via crafted .js file to mjs_set_errorf.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.37%

29.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cesanta	Mjs	1.26

References

https://github.com/cesanta/mjs/issues/175Exploit, Issue Tracking, Third Party Advisory
https://github.com/cesanta/mjs/issues/175Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Feb 3, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36535?

Buffer Overflow vulnerability in Cesanta mJS 1.26 allows remote attackers to cause a denial of service via crafted .js file to mjs_set_errorf.

How severe is CVE-2021-36535?

CVE-2021-36535 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36535?

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-2021-36535?

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

Scan your code now

Source: NVD / NIST