CVE-2021-30485

Name: CVE-2021-30485
Creator: NVD / NIST
Published: 2021-04-11T16:15:13.14+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.21%

Last modified Jun 17, 2026

CVE-2021-30485 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_internal_dtd(), while parsing a crafted XML file, performs incorrect memory handling, leading to a NULL pointer dereference while running strcmp() on a NULL pointer.. EPSS estimates a 1.21% chance of exploitation in the next 30 days.

Description

An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_internal_dtd(), while parsing a crafted XML file, performs incorrect memory handling, leading to a NULL pointer dereference while running strcmp() on a NULL pointer.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.21%

64.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Ezxml Project	Ezxml	0.8.6
Debian	Debian Linux	9.0

References

https://lists.debian.org/debian-lts-announce/2021/07/msg00005.htmlThird Party Advisory
https://sourceforge.net/p/ezxml/bugs/25/Exploit, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00005.htmlThird Party Advisory
https://sourceforge.net/p/ezxml/bugs/25/Exploit, Patch, Third Party Advisory

Timeline

Published: Apr 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30485?

How severe is CVE-2021-30485?

CVE-2021-30485 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30485?

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-2021-30485?

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

Scan your code now

Source: NVD / NIST