# CVE-2026-5598: bouncycastle: Covert timing channel vulnerability in Legion of the Bouncy Castle Inc

CVE-2026-5598 is fixed in bouncycastle on 1 platform by DEBIAN-CVE-2026-5598 (version 1.86-1), released April 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-5598
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0090
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 15, 2026

## Description

Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules).   This vulnerability is associated with program files FrodoEngine.Java.    This issue affects BC-JAVA: from 1.71 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bouncycastle Debian 14 | 1.86-1 | [DEBIAN-CVE-2026-5598](https://patchblox.com/security/data/fix/linux/debian-cve-2026-5598.md) | Apr 15, 2026 |

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Data as of 2026-11-08T06:59:42Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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