# DSA-6138-1: libpng1.6 security update

DSA-6138-1, released February 17, 2026, fixes 1 CVE in libpng1.6. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/dsa-6138-1
- Platform: Linux
- Released: Feb 17, 2026
- Priority: High (Closes CVE-2026-25646, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2026-25646

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libpng1.6](https://patchblox.com/security/data/product/linux/libpng1.6.md) | Debian 12.15 (bookworm) | 1.6.39-2+deb12u3 |
| [libpng1.6](https://patchblox.com/security/data/product/linux/libpng1.6.md) | Debian 13.5 (trixie) | 1.6.48-1+deb13u3 |

## 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 |  |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo