CVE-2021-1252

    Dashboard / Vulnerabilities / CVE-2021-1252

    CVE-2021-1252

    Published: 8 Apr 2021Last Modified: 9 Jul 2026

    Summary:

    Details: 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.

    References: https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 31824a659dff37ae03e3419395bb68e659c2b165
    Fixed -None

    Affected versions

    0.103.0
    0.103.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-1252 | CVE-DB