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Microsoft Security Response CenterCVE-2026-34501

Apache Portable Runtime Utility: Heap buffer overflow in APR redis client

Mariner

Read the vendor bulletin Get alerts for azl3 apr-util 1.6.3-2 on Azure Linux
7.5CVSS out of 10High severity
Scope

What the vendor says is affected

  • azl3 apr-util 1.6.3-2 on Azure Linux 3.0

Versions the vendor lists as fixed

  • 1.6.3-3
Next step

What the vendor recommends

CBL-Mariner Releases

Review the complete instructions on the vendor's site
Update history

What changed in later vendor updates

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

    • Added fixed versions: 1.6.3-3.
    • The vendor changed its remediation guidance.
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-34501View CVSS, KEV, EPSS, and threat context
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