CVE-2021-26220

Name: CVE-2021-26220
Creator: NVD / NIST
Published: 2021-02-08T21:15:13.46+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.18%

Last modified Jun 17, 2026

CVE-2021-26220 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. The ezxml_toxml function in ezxml 0.8.6 and earlier is vulnerable to OOB write when opening XML file after exhausting the memory pool.. EPSS estimates a 1.18% chance of exploitation in the next 30 days.

Description

The ezxml_toxml function in ezxml 0.8.6 and earlier is vulnerable to OOB write when opening XML file after exhausting the memory pool.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

1.18%

63.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Ezxml Project	Ezxml	<= 0.8.6

References

https://sourceforge.net/p/ezxml/bugs/23/Exploit, Third Party Advisory
https://sourceforge.net/p/ezxml/bugs/23/Exploit, Third Party Advisory

Timeline

Published: Feb 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26220?

The ezxml_toxml function in ezxml 0.8.6 and earlier is vulnerable to OOB write when opening XML file after exhausting the memory pool.

How severe is CVE-2021-26220?

CVE-2021-26220 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.18% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26220?

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-2021-26220?

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

Scan your code now

Source: NVD / NIST