What’s Vulnerable › Vulnerabilities

CVE-2021-32439

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-11 · updated 2026-06-17
• Weakness: CWE-120

Description

Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.

Affected products

• GPAC: 1.0.1

References

• https://github.com/gpac/gpac/commit/77ed81c069e10b3861d88f72e1c6be1277ee7eae
• https://github.com/gpac/gpac/issues/1774
• https://github.com/gpac/gpac/commit/77ed81c069e10b3861d88f72e1c6be1277ee7eae
• https://github.com/gpac/gpac/issues/1774

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