What is CVE-2026-19589?

CVE-2026-19589 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Packer vulnerable to arbitrary file write via crafted plugin archive during installation

Which CVE IDs does CVE-2026-19589 cover?

CVE-2026-19589 covers the following CVE IDs: CVE-2026-19589. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-19589?

CVE-2026-19589 has a CVSS v3 base score of 7.1, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-19589?

CVE-2026-19589 affects 1 product, including: azl3 packer 1.9.5-18 on Azure Linux 3.0.

CVE-2026-19589HighCVSS 7.1

Packer vulnerable to arbitrary file write via crafted plugin archive during installation

Vendor

Microsoft Security Response Center (MSRC)

Published

August 20, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-19589 →

🎯 Affected products1

azl3 packer 1.9.5-18 on Azure Linux 3.0

✅ Remediation

Security Update — fixed build 1.9.5-20

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-19589
patchhttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade