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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 1.80.1, from 1.82 before 1.84.

PUBLISHED Reserved 2026-04-05 | Published 2026-04-15 | Updated 2026-05-18 | Assigner bcorg




HIGH: 8.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/S:P/AU:Y/U:Red

Problem types

CWE-385 Covert timing channel

Product status

Default status
unaffected

1.71 (maven) before 1.80.2
affected

1.81 (maven) before 1.80.1
affected

1.82 (maven) before 1.84
affected

Credits

Cristina Dueñas Navarro (cristina.duenas@jtsec.es) finder

Sunwoo Lee and Seunghyun Yoon, Korea Institute of Energy Technology (KENTECH) finder

References

github.com/bcgit/bc-java/wiki/CVE‐2026‐5598 vendor-advisory

github.com/...ommit/94abbd56413dfdac651fd878bc60253871ef5e87 patch

github.com/...ommit/8692e6b2b191fc4aafa32545c7a78bdb9bf110c5 patch

cve.org (CVE-2026-5598)

nvd.nist.gov (CVE-2026-5598)

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