PT-2026-29083 · Opensc · Opensc

Published 2025-01-01 · Updated 2026-04-30 · CVE-2025-66215

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions OpenSC versions prior to 0.27.0

Description OpenSC is an open source smart card tools and middleware. An attacker with physical access to a computer while a user or administrator is utilizing a token can trigger a stack-based buffer overflow in the card-oberthur component. The attack requires a specifically crafted USB device or smart card that sends specially designed responses to the Application Protocol Data Units (APDUs). APDUs are messages exchanged between a smart card reader and a smart card.

Recommendations Update to version 0.27.0 or later.

Exploit

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2025-66215

GHSA-Q5FC-CW56-HWP2

OPENSUSE-SU-2026:10475-1

SUSE-SU-2026:1477-1

SUSE-SU-2026:21283-1

SUSE-SU-2026:21320-1

Affected Products

Opensc

References · 29

• 🔥 https://github.com/OpenSC/OpenSC/wiki/CVE-2025-66215 · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66215.json · Exploit
• https://github.com/OpenSC/OpenSC/pull/3436 · Patch
• https://github.com/OpenSC/OpenSC/commit/efd1d479832141bcf705c2f47655ada4d5f92f5d · Patch
• https://github.com/OpenSC/OpenSC/security/advisories/GHSA-q5fc-cw56-hwp2 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-66215 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10475-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-66215 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-66215 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-66215 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-66215 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-66215 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:1477-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-66215 · Security Note
• https://ubuntu.com/security/CVE-2025-66215 · Vendor Advisory