CVE-2021-21810: Att Xmill

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

A memory corruption vulnerability exists in the XML-parsing ParseAttribs functionality of AT&T Labs’ Xmill 0.7. A specially crafted XML file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Affected products

• Att Xmill: version 0.7 only

Published 2021-08-17. Last modified 2026-06-17.