# DLA-4456-1: openjdk-17 security update

DLA-4456-1, released January 26, 2026, fixes 1 CVE in openjdk-17 (version 17.0.18+8-1~deb11u1). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/dla-4456-1
- Platform: Linux
- Released: Jan 26, 2026
- Priority: High (Closes CVE-2026-21925, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2026-21925

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [openjdk-17](https://patchblox.com/security/data/product/linux/openjdk-17.md) | Debian 11.6 (bullseye) | 17.0.18+8-1~deb11u1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-21925](https://patchblox.com/security/data/cve/CVE-2026-21925.md) | High | Java(TM) SE Development Kit 21 and 1 other: Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product… | 7.5 | 0.0025 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo