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HIGH

CVE-2021-21772

CVSS v3

8.1

HIGH

EPSS Score

4.2 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2021-21772 Red Hat Product Security

    lib3mf: specially crafted 3MF file can lead to code execution

Full record on NVD

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.

Technical details

Published
2021-03-10

Frequently asked questions

What is CVE-2021-21772?

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.

Is CVE-2021-21772 actively exploited?

Active exploitation of CVE-2021-21772 has not been confirmed. Its EPSS score was 4.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-21772?

CVE-2021-21772 has a CVSS v3 base score of 8.1 (HIGH severity).

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