# RHSA-2021:4241: Security update for 3 packages

RHSA-2021:4241, released November 9, 2021, fixes 4 CVEs across 3 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2021-4241
- Platform: Linux
- Released: Nov 9, 2021
- Priority: High (Closes CVE-2020-35523, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2021:4241

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libtiff](https://patchblox.com/security/data/product/linux/libtiff.md) | RHEL 8 | 0:4.0.9-20.el8 |
| [libtiff-devel](https://patchblox.com/security/data/product/linux/libtiff-devel.md) | RHEL 8 | 0:4.0.9-20.el8 |
| [libtiff-tools](https://patchblox.com/security/data/product/linux/libtiff-tools.md) | RHEL 8 | 0:4.0.9-20.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-35523](https://patchblox.com/security/data/cve/CVE-2020-35523.md) | High | libtiff: The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF) files.  Security... | 7.8 | 0.0192 |  |
| [CVE-2020-35524](https://patchblox.com/security/data/cve/CVE-2020-35524.md) | High | libtiff: The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF) files.  Security... | 7.8 | 0.0185 |  |
| [CVE-2020-35522](https://patchblox.com/security/data/cve/CVE-2020-35522.md) | High | libtiff: The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF) files.  Security... | 7.8 | 0.0157 |  |
| [CVE-2020-35521](https://patchblox.com/security/data/cve/CVE-2020-35521.md) | High | libtiff: The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF) files.  Security... | 7.8 | 0.0123 |  |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo