CVE-2026-13505: BC-FJA 1.0.0 to before 1.0.2.7, 2.0.0 to before 2.0.2, 2.1.0 to before 2.1.3

Affected technology

BC-FJA · 1.0.0 to before 1.0.2.7, 2.0.0 to before 2.0.2, 2.1.0 to before 2.1.3
Legion of the Bouncy Castle Inc.

Description’s affected range: before bc-fips 1.0.2.7 (1.0.X series)

Component: Not specified by the source
File: SymmetricSecretKey, SecretZeroizer, AESWorkingBuffer, DESedeWorkingBuffer, HashDRBGWorkingBuffer, HMacDRBGWorkingBuffer, CTRDRBGWorkingBuffer

Attack conditions (Source advisory, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.