CVE-2016-1000345: Bouncycastle Bc-Java

Medium severity, CVSS 5.9. EPSS: 2.6% chance of exploitation in the next 30 days.

In the Bouncy Castle JCE Provider version 1.55 and earlier the DHIES/ECIES CBC mode vulnerable to padding oracle attack. For BC 1.55 and older, in an environment where timings can be easily observed, it is possible with enough observations to identify when the decryption is failing due to padding.

Affected products

• Bouncycastle Bc-Java: up to and including 1.55
• Debian Debian Linux: version 8.0 only

Published 2018-06-04. Last modified 2026-06-17.