# ELSA-2021-1600: opensc security update

ELSA-2021-1600, released May 25, 2021, fixes 3 CVEs in opensc (version 0:0.20.0-4.el8). None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/elsa-2021-1600
- Platform: Linux
- Released: May 25, 2021
- Priority: Routine (Closes 3 CVEs, none high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2021-1600.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [opensc](https://patchblox.com/security/data/product/linux/opensc.md) | ol 8 | 0:0.20.0-4.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-26571](https://patchblox.com/security/data/cve/CVE-2020-26571.md) | Routine | opensc: The OpenSC set of libraries and utilities provides support for working with smart cards | 5.5 | 0.0039 |  |
| [CVE-2020-26570](https://patchblox.com/security/data/cve/CVE-2020-26570.md) | Routine | opensc: The OpenSC set of libraries and utilities provides support for working with smart cards | 6.4 | 0.0038 |  |
| [CVE-2020-26572](https://patchblox.com/security/data/cve/CVE-2020-26572.md) | Routine | opensc: The OpenSC set of libraries and utilities provides support for working with smart cards | 6.4 | 0.0038 |  |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo