# RHSA-2026:4728: Security update for 2 packages

RHSA-2026:4728, released April 15, 2026, fixes 3 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-4728
- Platform: Linux
- Released: Apr 15, 2026
- Priority: High (Closes CVE-2026-25646, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:4728

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libpng](https://patchblox.com/security/data/product/linux/libpng.md) | RHEL 8 | 2:1.6.34-10.el8_10 |
| [libpng-devel](https://patchblox.com/security/data/product/linux/libpng-devel.md) | RHEL 8 | 2:1.6.34-10.el8_10 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-25646](https://patchblox.com/security/data/cve/CVE-2026-25646.md) | High | mingw32-libpng: MinGW Windows Libpng library.  Security Fix(es):  * libpng: libpng: Information disclosure and denial of service via... | 8.1 | 0.0112 |  |
| [CVE-2026-22695](https://patchblox.com/security/data/cve/CVE-2026-22695.md) | High | LIBPNG has a heap buffer over-read in png_image_read_direct_scaled (regression from CVE-2025-65018 fix) | 7.1 | 0.0022 |  |
| [CVE-2026-22801](https://patchblox.com/security/data/cve/CVE-2026-22801.md) | High | LIBPNG has an integer truncation causing heap buffer over-read in png_image_write_* | 7.8 | 0.0013 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo