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CVE-2025-8916

Possible DOS in processing large name constraint structures in PKIXCertPathReveiwer

MEDIUM
6.3
CVSS Score
Published: August 13, 2025 at 09:31 AM UTC
Updated: June 17, 2026 at 10:07 AM UTC
3 products affected across 2 vendorsSIMATIC CN 4100BC JavaBCPKIX FIPS

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Allocation of Resources Without Limits or Throttling vulnerability in Legion of the Bouncy Castle Inc. BC Java bcpkix on All (API modules), Legion of the Bouncy Castle Inc. BC Java bcprov on All (API modules), Legion of the Bouncy Castle Inc. BCPKIX FIPS bcpkix-fips on All (API modules) allows Excessive Allocation. This vulnerability is associated with program files https://github.Com/bcgit/bc-java/blob/main/pkix/src/main/java/org/bouncycastle/pkix/jcajce/PKIXCertPathReviewer.Java, https://github.Com/bcgit/bc-java/blob/main/prov/src/main/java/org/bouncycastle/x509/PKIXCertPathReviewer.Java. This issue affects BC Java: from 1.44 through 1.78; BC Java: from 1.44 through 1.78; BCPKIX FIPS: from 1.0.0 through 1.0.7, from 2.0.0 through 2.0.7.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

BC Java· Legion of Bouncy Castlemaven
60%
1.44 ≤ v ≤ 1.781.44
BCPKIX FIPS· Legion of Bouncy Castlemaven
60%
1.0.0 ≤ v ≤ 1.0.72.0.0 ≤ v ≤ 2.0.71.0.02.0.0
SIMATIC CN 4100· Siemens
60%
v < V5.0
Affected range stops below V5.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: 91579145-5d7b-4cc5-b925-a0262ff19630
https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902025%E2%80%908916
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
https://cert-portal.siemens.com/productcert/html/ssa-032379.html

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMbcorg
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-770

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