# ELSA-2026-33731: Security update for 8 packages

ELSA-2026-33731, released July 16, 2026, fixes 1 CVE across 8 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2026-33731
- Platform: Linux
- Released: Jul 16, 2026
- Priority: High (Closes CVE-2026-43958, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2026-33731.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [python3-rrdtool](https://patchblox.com/security/data/product/linux/python3-rrdtool.md) | ol 10 | 0:1.8.0-21.el10_2 |
| [rrdtool](https://patchblox.com/security/data/product/linux/rrdtool.md) | ol 10 | 0:1.8.0-21.el10_2 |
| [rrdtool-devel](https://patchblox.com/security/data/product/linux/rrdtool-devel.md) | ol 10 | 0:1.8.0-21.el10_2 |
| [rrdtool-doc](https://patchblox.com/security/data/product/linux/rrdtool-doc.md) | ol 10 | 0:1.8.0-21.el10_2 |
| [rrdtool-lua](https://patchblox.com/security/data/product/linux/rrdtool-lua.md) | ol 10 | 0:1.8.0-21.el10_2 |
| [rrdtool-perl](https://patchblox.com/security/data/product/linux/rrdtool-perl.md) | ol 10 | 0:1.8.0-21.el10_2 |
| [rrdtool-ruby](https://patchblox.com/security/data/product/linux/rrdtool-ruby.md) | ol 10 | 0:1.8.0-21.el10_2 |
| [rrdtool-tcl](https://patchblox.com/security/data/product/linux/rrdtool-tcl.md) | ol 10 | 0:1.8.0-21.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-43958](https://patchblox.com/security/data/cve/CVE-2026-43958.md) | High | Rrdtool: rrdtool: stack buffer overflow allows local code execution or denial of service | 7.8 | 0.0018 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo