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Vulnerability · Published Oct 24, 2025 · Assigned by bcorg

CVE-2025-12194

Medium 5.9

In plain English

A medium-severity uncontrolled resource consumption in Bouncy Castle for Java FIPS from Legion of the Bouncy Castle Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.9Medium
Exploit odds (30 days)0.2%top 95.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Uncontrolled Resource Consumption vulnerability in Legion of the Bouncy Castle Inc. Bouncy Castle for Java FIPS bc-fips on All (API modules), Legion of the Bouncy Castle Inc. Bouncy Castle for Java LTS bcprov-lts8on on All (API modules) allows Excessive Allocation. This vulnerability is associated with program files core/src/main/jdk1.9/org/bouncycastle/crypto/fips/AESNativeCFB.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/fips/AESNativeGCM.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/fips/SHA256NativeDigest.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/fips/AESNativeEngine.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/fips/AESNativeCBC.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/fips/AESNativeCTR.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/engines/AESNativeCFB.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/engines/AESNativeGCM.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/engines/AESNativeEngine.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/engines/AESNativeCBC.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/engines/AESNativeGCMSIV.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/engines/AESNativeCCM.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/engines/AESNativeCTR.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/digests/SHA256NativeDigest.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/digests/SHA224NativeDigest.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/digests/SHA3NativeDigest.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/digests/SHAKENativeDigest.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/digests/SHA512NativeDigest.Java, core/src/main/jdk1.9/org/bouncycastle/crypto/digests/SHA384NativeDigest.Java. This issue affects Bouncy Castle for Java FIPS: from 2.1.0 through 2.1.1; Bouncy Castle for Java LTS: from 2.73.0 through 2.73.7.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12bouncycastleno fix listedDEBIAN-CVE-2025-12194
Debian:13bouncycastleno fix listedDEBIAN-CVE-2025-12194
Debian:14bouncycastleno fix listedDEBIAN-CVE-2025-12194
Mavenorg.bouncycastle:bc-fips2.1.2GHSA-jv6h-4262-q663
Mavenorg.bouncycastle:bcprov-debug-lts8on2.73.8GHSA-jv6h-4262-q663
Ubuntu:22.04:LTSbouncycastleno fix listedUBUNTU-CVE-2025-12194
Ubuntu:24.04:LTSbouncycastleno fix listedUBUNTU-CVE-2025-12194
Ubuntu:25.10bouncycastleno fix listedUBUNTU-CVE-2025-12194

Affected products (as reported)

VendorProductVersions
Legion of the Bouncy Castle Inc. Bouncy Castle for Java FIPS 2.1.0 – through 2.1.1
Legion of the Bouncy Castle Inc. Bouncy Castle for Java LTS 2.73.0 – through 2.73.7

Weakness: CWE-400 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/S:P/AU:N/R:U/V:C/RE:M/U:Amber

References