What is CVE-2026-6100?

CVE-2026-6100 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Use-after-free in lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile after re-use under memory pressure

Which CVE IDs does CVE-2026-6100 cover?

CVE-2026-6100 covers the following CVE IDs: CVE-2026-6100. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-6100?

CVE-2026-6100 has a CVSS v3 base score of 8.1, published by Microsoft Security Response Center (MSRC).

CVE-2026-6100HighCVSS 8.1

Use-after-free in lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile after re-use under memory pressure

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-6100 →