Vulnerabilities CVE-2026-5598

CVE-2026-5598

High

Open

TLP:CLEAR

Non-constant time comparisons risk private key leakage in FrodoKEM.

NVD CVE.org

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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 1.81.1, from 1.82 before 1.84.

Details

CVSS Score: 8.9
EPSS Score ⓘ: 0.69%

49.6th percentile
CVSS Vector: CVSS: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
Confidence: 90%
Published: Apr 15, 2026
Last Modified: Aug 12, 2026

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