VYPR
Medium severity4.5NVD Advisory· Published Jul 6, 2022· Updated Jun 17, 2026

CVE-2021-3696

CVE-2021-3696

Description

A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

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Affected products

67

Patches

Vulnerability mechanics

References

3

News mentions

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