What is CVE-2026-89157?

CVE-2026-89157 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern.

Which CVE IDs does CVE-2026-89157 cover?

CVE-2026-89157 covers the following CVE IDs: CVE-2026-89157. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-89157?

CVE-2026-89157 has a CVSS v3 base score of 5.7, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-89157?

CVE-2026-89157 affects 3 products, including: azl3 nmap 7.95-5 on Azure Linux 3.0; azl3 nmap 7.95-6 on Azure Linux 3.0; azl3 pcre2 10.42-3 on Azure Linux 3.0.

CVE-2026-89157MediumCVSS 5.7

PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern.

Vendor

Microsoft Security Response Center (MSRC)

Published

September 12, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-89157 →

🎯 Affected products3

azl3 nmap 7.95-5 on Azure Linux 3.0
azl3 nmap 7.95-6 on Azure Linux 3.0
azl3 pcre2 10.42-3 on Azure Linux 3.0

✅ Remediation

Security Update — fixed build 10.48-1 KBRelease Notes (Security Update) — fixed build 7.95-6

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-89157
patchhttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade