CVE-2020-7065

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-121 CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Apr 1, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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