LOW 3.9 Microsoft

CVE-2025-66038

OpenSC: `sc_compacttlv_find_tag` can return out-of-bounds pointers

Microsoft Security Update 2026-Mar: OpenSC: `sc_compacttlv_find_tag` can return out-of-bounds pointers

Affected Products

cbl2 opensc 0.23.0-5 on CBL Mariner 2.0
azl3 opensc 0.27.1-2 on Azure Linux 3.0
azl3 opensc 0.26.1-1 on Azure Linux 3.0
azl3 opensc 0.27.1-1 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-66038
https://nvd.nist.gov/vuln/detail/CVE-2025-66038

Published: 2026-03-10 · Source: Microsoft · Feed updated: 2026-08-10

This low severity vulnerability with a CVSS score of 3.9 was published on 2026-03-10 via Microsoft. Affected: cbl2 opensc 0.23.0-5 on CBL Mariner 2.0, azl3 opensc 0.27.1-2 on Azure Linux 3.0, azl3 opensc 0.26.1-1 on Azure Linux 3.0 and 1 more.

vulnfeed aggregates 9044 vulnerabilities from NVD, CISA KEV, Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.