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.

Routine

CVSS

n/a

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0090

59th percentile

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

Product	Fixed in	Fix	Released
Linux
bouncycastle · Debian 14	1.86-1	DEBIAN-CVE-2026-5598	Apr 15, 2026

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