CVE-2018-20004 Memory corruption in n/a

What is CVE-2018-20004?

CVE-2018-20004 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 10 Dec 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An issue has been found in Mini-XML (aka mxml) 2.12. It is a stack-based buffer overflow in mxml_write_node in mxml-file.c via vectors involving a double-precision floating point number and the '<order type="real">' substring, as demonstrated by testmxml.

Weakness: CWE-787

Which versions are affected by CVE-2018-20004?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Mini-Xml Project Mini-Xml.

How do I fix CVE-2018-20004?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-20004 being exploited?

There is no known exploitation of CVE-2018-20004 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-20004, GHSA-m996-pmvg-j3g8, UBUNTU-CVE-2018-20004.