What is CVE-2025-52497?

CVE-2025-52497 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Mbed TLS before 3.6.4 has a PEM parsing one-byte heap-based buffer underflow, in mbedtls_pem_read_buffer and two mbedtls_pk_parse functions, via untrusted PEM input.

Which CVE IDs does CVE-2025-52497 cover?

CVE-2025-52497 covers the following CVE IDs: CVE-2025-52497. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-52497?

CVE-2025-52497 has a CVSS v3 base score of 4.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-52497?

CVE-2025-52497 affects 1 product, including: azl3 qemu 10.1.0-1 on Azure Linux 3.0.

CVE-2025-52497MediumCVSS 4.8

Mbed TLS before 3.6.4 has a PEM parsing one-byte heap-based buffer underflow, in mbedtls_pem_read_buffer and two mbedtls_pk_parse functions, via untrusted PEM input.

Vendor

Microsoft Security Response Center (MSRC)

Published

September 3, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-52497 →

🎯 Affected products1

azl3 qemu 10.1.0-1 on Azure Linux 3.0

✅ Remediation

Security Update

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-52497
patchhttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade