What is CVE-2026-4111?

CVE-2026-4111 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive

Which CVE IDs does CVE-2026-4111 cover?

CVE-2026-4111 covers the following CVE IDs: CVE-2026-4111. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-4111?

CVE-2026-4111 has a CVSS v3 base score of 7.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-4111?

CVE-2026-4111 affects 2 products, including: azl3 libarchive 3.7.7-4 on Azure Linux 3.0; cbl2 libarchive 3.6.1-8 on CBL Mariner 2.0.

CVE-2026-4111HighCVSS 7.5

Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-4111 →

🎯 Affected products2

azl3 libarchive 3.7.7-4 on Azure Linux 3.0
cbl2 libarchive 3.6.1-8 on CBL Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 3.6.1-9 KBCBL-Mariner Releases (Security Update) — fixed build 3.7.7-5

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-4111
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade