Bouncy Castle Vulnerable to Uncontrolled Resource Consumption

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

5.9 · 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:N/R:U/V:C/RE:M/U:Amber · score source

EPSS

• CVE-2025-12194: 0.16% estimated exploitation activity in the next 30 days; percentile 4.73 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

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,…

Published by the source

25 Oct 2025, 00:30 UTC

Last modified by the source

28 Oct 2025, 17:48 UTC

Source last checked

26 Oct 2026, 16:40 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-jv6h-4262-q663

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# Patch Next advisory brief: CVE-2025-12194

Advisory: Bouncy Castle Vulnerable to Uncontrolled Resource Consumption
IDs: CVE-2025-12194, GHSA-jv6h-4262-q663
Record: https://patchnext.com/advisories/cve-2025-12194 (revision 1, source checked 26 Oct 2026, 16:40 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.bouncycastle:bc-fips 2.1.2; org.bouncycastle:bcprov-debug-lts8on 2.73.8. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.bouncycastle:bc-fips: affected >= 2.1.0, <= 2.1.1; fixed in 2.1.2
- Maven org.bouncycastle:bcprov-debug-lts8on: affected >= 2.73.0, <= 2.73.7; fixed in 2.73.8

## Suggested inspection (read-only)
- Maven org.bouncycastle:bc-fips: check the installed version with your package manager.
- Maven org.bouncycastle:bcprov-debug-lts8on: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.bouncycastle:bc-fips, org.bouncycastle:bcprov-debug-lts8on.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-jv6h-4262-q663 (GitHub-reviewed advisory GHSA-jv6h-4262-q663 lists affected ranges: Maven org.bouncycastle:bc-fips >=2.1.0 =2.73.0 <=2.73.7)

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