What is CVE-2025-12818?

CVE-2025-12818 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. PostgreSQL libpq undersizes allocations, via integer wraparound

Which CVE IDs does CVE-2025-12818 cover?

CVE-2025-12818 covers the following CVE IDs: CVE-2025-12818. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-12818?

CVE-2025-12818 has a CVSS v3 base score of 5.9, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-12818?

CVE-2025-12818 affects 6 products, including: azl3 postgresql 16.10-1 on Azure Linux 3.0; azl3 rust 1.75.0-22 on Azure Linux 3.0; azl3 rust 1.90.0-1 on Azure Linux 3.0; azl3 rust 1.90.0-3 on Azure Linux 3.0; azl3 rust 1.90.0-4 on Azure Linux 3.0; and others — see the full list on the advisory page.

CVE-2025-12818MediumCVSS 5.9

PostgreSQL libpq undersizes allocations, via integer wraparound

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2025-12818 →

🎯 Affected products6

azl3 postgresql 16.10-1 on Azure Linux 3.0
azl3 rust 1.75.0-22 on Azure Linux 3.0
azl3 rust 1.90.0-1 on Azure Linux 3.0
azl3 rust 1.90.0-3 on Azure Linux 3.0
azl3 rust 1.90.0-4 on Azure Linux 3.0
cbl2 postgresql 14.19-1 on CBL Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 1.90.0-4 KBCBL-Mariner Releases (Security Update) — fixed build 16.11-1 KBCBL-Mariner Releases (Security Update) — fixed build 14.20-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-12818
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade