# RHSA-2021:1783: Security update for 7 packages

RHSA-2021:1783, released May 18, 2021, fixes 1 CVE across 7 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2021-1783
- Platform: Linux
- Released: May 18, 2021
- Priority: High (Closes CVE-2020-26117, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2021:1783

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [tigervnc](https://patchblox.com/security/data/product/linux/tigervnc.md) | RHEL 8 | 0:1.11.0-6.el8 |
| [tigervnc-icons](https://patchblox.com/security/data/product/linux/tigervnc-icons.md) | RHEL 8 | 0:1.11.0-6.el8 |
| [tigervnc-license](https://patchblox.com/security/data/product/linux/tigervnc-license.md) | RHEL 8 | 0:1.11.0-6.el8 |
| [tigervnc-selinux](https://patchblox.com/security/data/product/linux/tigervnc-selinux.md) | RHEL 8 | 0:1.11.0-6.el8 |
| [tigervnc-server](https://patchblox.com/security/data/product/linux/tigervnc-server.md) | RHEL 8 | 0:1.11.0-6.el8 |
| [tigervnc-server-minimal](https://patchblox.com/security/data/product/linux/tigervnc-server-minimal.md) | RHEL 8 | 0:1.11.0-6.el8 |
| [tigervnc-server-module](https://patchblox.com/security/data/product/linux/tigervnc-server-module.md) | RHEL 8 | 0:1.11.0-6.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-26117](https://patchblox.com/security/data/cve/CVE-2020-26117.md) | High | tigervnc: Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment... | 8.1 | 0.0306 |  |

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Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo