ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-5598

Covert timing channel vulnerability in Legion of the Bouncy Castle Inc.

Published Apr 15, 2026 · catalog updated Sep 18, 2026 · Covert timing channel vulnerability

Check if you run it

No confirmed exploitation is on record for CVE-2026-5598. EPSS is 0.96%. Act only if a listed version of Covert timing channel vulnerability is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Covert timing channel vulnerability).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.96%
Remediation
Not established
Affected products
See sources for product scope

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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-5598

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-5598. EPSS is 0.96%. Act only if a listed version of Covert timing channel vulnerability is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-385. EPSS 0.96%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 15, 2026 · NIST NVD

    Detected

    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.

  2. Sep 18, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-5598

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-5598

    30-day exploitation probability 1.0%

    first.org
  • NIST NVDVulnerability recordCVE-2026-5598

    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.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.