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Threatist priority CRITICAL 0 HIGH 0 MEDIUM 2 LOW 0

Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

Fix status Fixed 1 Partial 1 Will not fix 0 Deferred 0 No fix listed 0

Impact type Code execution 0 Privilege escalation 0 Security bypass 0 Information disclosure 0 Tampering 0 Denial of service 1 Spoofing 0 Cross-site scripting 0 SQL injection 0

Attack vector Network 2 Adjacent network 0 Local 0 Physical 0

Requirements No authentication 2 No user interaction 2

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Weakness (CWE) CWE-297 Improper Validation of Certificate with Host Mismatch 1 CWE-789 Memory Allocation with Excessive Size Value 1

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Release: Legion of the Bouncy Castle BC-FJA 1.0.24, 2.0.24, 2.1.24 × Clear all filters

TI-2026-42533 CVE-2026-59638 · GHSA-8rxj-3p7p-rq39

JSSE hostname verifier CN-fallback enabled by default despite documented opt-in

Priority MEDIUM 48

In Bouncy Castle for Java before 1.85, JSSE hostname verifier CN-fallback enabled by default despite documented opt-in.

CVSS 4.0CRITICAL 9.3· Network · No auth · No interaction · EPSS 0.00345 · Published 2026-08-03 · Fixed in 1.85, 2.73.12 +3 CWE-297

TI-2026-42541 CVE-2026-59646 · GHSA-4m8h-6737-hrw6

DTLS handshake reassembler allocates buffer from unchecked 24-bit length

Priority MEDIUM 44

In Bouncy Castle for Java before 1.85, DTLS handshake reassembler allocates buffer from unchecked 24-bit length.

CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00465 · Published 2026-08-03 · Partial fix · 1.85, 2.73.12 +3 CWE-789

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