CVE-2026-15997: Legion Of The Bouncy Castle Inc Bc-LTS

Low severity, CVSS 1.7. EPSS: 0.1% chance of exploitation in the next 30 days.

Out-of-bounds write vulnerability in Legion of the Bouncy Castle Inc. BC-LTS bcprov-lts8on on ARM allows Overflow Buffers. This vulnerability is associated with program files https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/shake.C, https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/sha3.C. This issue affects BC-LTS: from 2.73.0 before 2.73.12.1. Issue is only applicable if application involved is accepting memoable SHA3 / SHAKE states from potentially untrusted sources.

Affected products

Published 2026-07-16. Last modified 2026-07-17.