Microsoft security update for CVE-2026-5172
🔗 CVE IDs covered (1)
📋 Microsoft's advisory
EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-5172. This page also shows what EchelonGraph holds for CVE-2026-5172, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.
🎯 Affected products3
- azl3 dnsmasq 2.90-1 on Azure Linux 3.0
- azl3 dnsmasq 2.92-1 on Azure Linux 3.0
- azl4 dnsmasq 2.92rel2-2.azl4 on Azure Linux 4.0
✅ Updates Microsoft lists: 2 updates
2 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.
| KB article | Update | Fixed build |
|---|---|---|
| — | Security Update | 2.92-1 |
| — | Security Update | 0:2.92rel2-2 |
🧭 EchelonGraph on CVE-2026-5172
- EchelonGraph score
- 7.3 HIGH
- CISA KEV
- Not listed
- Fix status
- A fix is available — apply it.
Description from the CVE record (CVE.org), as published by its numbering authority
A buffer overflow in dnsmasq’s extract_addresses() function allows an attacker to trigger a heap out-of-bounds read and crash by exploiting a malformed DNS response, enabling extract_name() to advance the pointer past the record’s end.
Published by CERT/CC, the CVE Numbering Authority that assigned CVE-2026-5172, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).