CVE-2026-5598
Non-constant time comparisons risk private key leakage in FrodoKEM.
Description
Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules). Non-constant time comparisons risk private key leakage in FrodoKEM. This issue affects BC-JAVA: from 2.17.3 before 1.84.
INFO
Published Date :
April 15, 2026, 9:05 a.m.
Last Modified :
April 15, 2026, 9:05 a.m.
Remotely Exploit :
Yes !
Source :
bcorg
Affected Products
The following products are affected by CVE-2026-5598
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | CRITICAL | 91579145-5d7b-4cc5-b925-a0262ff19630 |
Solution
- Update BC-JAVA core to version 1.84 or later.
- Ensure FrodoKEM implementations use constant-time comparisons.
- Consult vendor advisories for specific patches and guidance.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-5598 vulnerability anywhere in the article.