CVE-2021-40439

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

Apache OpenOffice has a dependency on expat software. Versions prior to 2.1.0 were subject to CVE-2013-0340 a "Billion Laughs" entity expansion denial of service attack and exploit via crafted XML files. ODF files consist of a set of XML files. All versions of Apache OpenOffice up to 4.1.10 are subject to this issue. expat in version 4.1.11 is patched.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-611

Affected software

VendorProductVersions
Apache Software FoundationApache OpenOffice>= Apache OpenOffice, <= 4.1.10; >= OpenOffice.org, <= 3.4

References

Timeline

Published
Oct 7, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-40439: Medium severity, CVSS 6.5 | Vulnix