# RHSA-2025:21036: pcs security update

RHSA-2025:21036, released October 10, 2025, fixes 5 CVEs in pcs (version 0.12.1-1.el10_1.1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2025-21036
- Platform: Linux
- Released: Oct 10, 2025
- Priority: High (Closes CVE-2025-61772, high severity)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2025:21036

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [pcs](https://patchblox.com/security/data/product/linux/pcs.md) | RHEL 10 | 0.12.1-1.el10_1.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-61770](https://patchblox.com/security/data/cve/CVE-2025-61770.md) | High | pcs: The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.  Security Fix(... | 7.5 | 0.0093 |  |
| [CVE-2025-61772](https://patchblox.com/security/data/cve/CVE-2025-61772.md) | High | pcs: The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.  Security Fix(... | 7.5 | 0.0093 |  |
| [CVE-2025-61919](https://patchblox.com/security/data/cve/CVE-2025-61919.md) | High | pcs: The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.  Security Fix(... | 7.5 | 0.0065 |  |
| [CVE-2025-59830](https://patchblox.com/security/data/cve/CVE-2025-59830.md) | High | ruby-rack: Rack is a modular Ruby web server interface | 7.5 | 0.0057 |  |
| [CVE-2025-61771](https://patchblox.com/security/data/cve/CVE-2025-61771.md) | High | pcs: The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.  Security Fix(... | 7.5 | 0.0056 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo