CVE-2020-36242

CriticalCVSS 9.1/10Last modified Jun 17, 2026

Description

In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weakness enumeration

CWE-190 CWE-787

Affected software

No affected versions have been published.

Timeline

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

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