# CVE-2026-40528: opensc: This update for opensc fixes the following issues  - CVE-2025-49010: stack-buffer-overflow via crafted smart card or...

CVE-2026-40528 is fixed in 3 products on 1 platform, first by SUSE-SU-2026:2697-1, released June 30, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-40528
- Priority: High
- CVSS: n/a (important)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 30, 2026

## Description

This update for opensc fixes the following issues  - CVE-2025-49010: stack-buffer-overflow via crafted smart card or USB device responses (bsc#1261214). - CVE-2025-66037: crafted input can cause an out-of-bounds read (bsc#1261218). - CVE-2025-66038: improper compact-TLV length validation can lead to crash or unexpected behavior (bsc#1261219). - CVE-2025-66215: crafted smart card or USB device can cause a stack-buffer-overflow write (bsc#1261220). - CVE-2026-10275: global buffer overflow during key pair generation tests due to missing input validation (bsc#1267246). - CVE-2026-40528: stack and heap buffer overrun in the `do_key_value()` function due to missing length check allows for   memory corruption via a crafted profile configuration file (bsc#1266963).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | opensc amzn 2023 | 0.24.0-1.amzn2023.0.6 | [ALAS2023-2026-1988](https://patchblox.com/security/data/fix/linux/alas2023-2026-1988.md) | Jul 20, 2026 |
| Linux | opensc opensuse-leap 16.0 | 0.26.1-160000.5.1 | [OPENSUSE-SU-2026:21873-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21873-1.md) | Sep 17, 2026 |
| Linux | opensc sles 15.6 | 0.22.0-150600.11.11.1 | [SUSE-SU-2026:2697-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2697-1.md) | Jun 30, 2026 |
| Linux | opensc sles 15.7 | 0.22.0-150600.11.11.1 | [SUSE-SU-2026:2697-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2697-1.md) | Jun 30, 2026 |
| Linux | opensc-debuginfo amzn 2023 | 0.24.0-1.amzn2023.0.6 | [ALAS2023-2026-1988](https://patchblox.com/security/data/fix/linux/alas2023-2026-1988.md) | Jul 20, 2026 |
| Linux | opensc-debugsource amzn 2023 | 0.24.0-1.amzn2023.0.6 | [ALAS2023-2026-1988](https://patchblox.com/security/data/fix/linux/alas2023-2026-1988.md) | Jul 20, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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