# RHSA-2025:23739: mod_md security update

RHSA-2025:23739, released January 16, 2026, fixes 1 CVE in mod_md (version 1:2.4.26-1.el9_7.1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2025-23739
- Platform: Linux
- Released: Jan 16, 2026
- Priority: High (Closes CVE-2025-55753, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2025:23739

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [mod_md](https://patchblox.com/security/data/product/linux/mod-md.md) | RHEL 9 | 1:2.4.26-1.el9_7.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-55753](https://patchblox.com/security/data/cve/CVE-2025-55753.md) | High | Apache HTTP Server: mod_md (ACME), unintended retry intervals | 7.5 | 0.0048 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo