CVE-2025-9340: native encrypt/decrypt operations in JCE may corrupt data if same byte array used for input and output.

Severity: none (CVSS 0.0 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-22 · updated 2026-06-17
Weakness: CWE-787

Description

Out-of-bounds Write vulnerability in Legion of the Bouncy Castle Inc. Bouncy Castle for Java bc-fips on All (API modules). This vulnerability is associated with program files org/bouncycastle/jcajce/provider/BaseCipher. This issue affects Bouncy Castle for Java: from BC-FJA 2.1.0 through 2.1.0.

Affected products

Legion of the Bouncy Castle Inc. Bouncy Castle for Java: from BC-FJA 2.1.0 through 2.1.0

References

https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902025%E2%80%909340

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