What is CVE-2026-84838?

CVE-2026-84838 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Rpm: command injection in rpmuncompress via unescaped filenames passed to popen()

Which CVE IDs does CVE-2026-84838 cover?

CVE-2026-84838 covers the following CVE IDs: CVE-2026-84838. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-84838?

CVE-2026-84838 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-84838?

CVE-2026-84838 affects 2 products, including: azl3 rpm 4.18.2-1 on Azure Linux 3.0; azl3 rpm 4.18.2-2 on Azure Linux 3.0.

CVE-2026-84838HighCVSS 7.8

Rpm: command injection in rpmuncompress via unescaped filenames passed to popen()

Vendor

Microsoft Security Response Center (MSRC)

Published

September 11, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-84838 →

🎯 Affected products2

azl3 rpm 4.18.2-1 on Azure Linux 3.0
azl3 rpm 4.18.2-2 on Azure Linux 3.0

✅ Remediation

Security Update

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84838
patchhttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade