What is CVE-2026-12345?

CVE-2026-12345 is a security advisory published by Microsoft Security Response Center (MSRC) with Low severity. Race condition in tempfile.TemporaryDirectory cleanup allows deleting files outside the temporary directory

Which CVE IDs does CVE-2026-12345 cover?

CVE-2026-12345 covers the following CVE IDs: CVE-2026-12345. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2026-12345?

CVE-2026-12345 affects 1 product, including: azl3 python3 3.12.14-2 on Azure Linux 3.0.

CVE-2026-12345Low

Race condition in tempfile.TemporaryDirectory cleanup allows deleting files outside the temporary directory

Vendor

Microsoft Security Response Center (MSRC)

Published

October 3, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-12345 →

🎯 Affected products1

azl3 python3 3.12.14-2 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update) — fixed build 3.12.16-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-12345
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade