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CVE-2021-21772

Status: ModifiedHigh (8.1)—💥 PoC

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.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (3)

3MF — Lib3mfDebian — Debian LinuxFedoraproject — Fedora

CWEs

References

Raw JSON (NVD)

Show
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          "value": "CWE-416"
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      "value": "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."
    },
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      "value": "Se presenta una vulnerabilidad de uso de la memoria previamente liberada en la funcionalidad NMR::COpcPackageReader::releaseZIP() de 3MF Consortium lib3mf versión 2.0.0. Un archivo 3MF especialmente diseñado puede conllevar a una ejecución de código. Un atacante puede proporcionar un archivo malicioso para activar esta vulnerabilidad"
    }
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}