CVE-2021-28211
MediumPublished
A heap overflow in LzmaUefiDecompressGetInfo function in EDK II.
- Published
- Jun 11, 2021
- Updated
- Aug 3, 2024
- Assigning CNA
- TianoCore
- Evidence observed
- Oct 27, 2026
Primary CVSS
6.7/ 10Medium
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.4%
Low · next 30 days
- Percentile
- 32.5%
- Model date
- Oct 28, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
A heap overflow in LzmaUefiDecompressGetInfo function in EDK II.
Sources
EDK2 BrotliCustomDecompressLib security findings — coordinated disclosure
Responsible use
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