None severity · published Aug 22, 2025
CVE-2025-9340
native encrypt/decrypt operations in JCE may corrupt data if same byte array used for input and output.
0.0
CVSS
0.2%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BC
Bouncy Castle for Java · Legion of the Bouncy Castle Inc.
BC-FJA 2.1.0 through 2.1.0 · source: vendor
Affected product
BC
Bouncy Castle for Java
Legion of the Bouncy Castle Inc.