What’s Vulnerable › Vulnerabilities

CVE-2021-21772

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-03-10 · updated 2026-06-17
• Weakness: CWE-416

Description

A use-after-free vulnerability exists in the NMR::COpcPackageReader::releaseZIP() functionality of 3MF Consortium lib3mf 2.0.0. A specially crafted 3MF file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Affected products

• 3Mf Lib3Mf: 2.0.0
• Debian Linux: 10.0
• Fedoraproject Fedora: 32, 33, 34

References

• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IHMMHD2EOMIVJ7EKZTJJMX4C7E6ZRWDL/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NPBS642OYVA6DUKK3HZHEINVWEDZSMEU/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDGGB65YBQL662M3MOBNNJJNRNURW4TG/
• https://security.gentoo.org/glsa/202208-01
• https://talosintelligence.com/vulnerability_reports/TALOS-2020-1226
• https://www.debian.org/security/2021/dsa-4887
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1226
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IHMMHD2EOMIVJ7EKZTJJMX4C7E6ZRWDL/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NPBS642OYVA6DUKK3HZHEINVWEDZSMEU/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDGGB65YBQL662M3MOBNNJJNRNURW4TG/
• https://security.gentoo.org/glsa/202208-01
• https://talosintelligence.com/vulnerability_reports/TALOS-2020-1226

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