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

• azl3 rpm 4.18.2-1 on Azure Linux 3.0

• azl3 rpm 4.18.2-2 on Azure Linux 3.0

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

1. Sep 27, 2026 at 11:11 PM UTC
   • The vendor changed its remediation guidance.
2. Sep 10, 2026 at 7:45 AM UTC
   • Added affected products: azl3 rpm 4.18.2-2 on Azure Linux 3.0.

1. Sep 7, 2026 at 2:02 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Sep 7, 2026 at 12:50 PM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

3. Sep 25, 2026 at 2:38 AM UTC
   Updated by Microsoft Security Response Center

   The vendor changed the advisory after it was first published.

4. Oct 28, 2026 at 3:45 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.