CVE-2021-1252

A vulnerability in the Excel XLM macro parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper error handling that may result in an infinite loop. An attacker could exploit this vulnerability by sending a crafted Excel file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process hang, resulting in a denial of service condition.

• CWE-20
• CWE-835

• https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.htmlRelease Notes, Vendor Advisory
• https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.htmlRelease Notes, Vendor Advisory

Published

Apr 8, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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