PatchTheCVEbc-csharp vulnerabilities and fixes
Recent CVEs affecting bc-csharp, with upgrade or downgrade steps. 6 tracked.
Also searched as: bc csharp.
bc-csharp has 6 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 6. Most recent: 2026-10-02. Highest priority: CVE-2026-63567 (score 41/100).
- CVE-2026-15999 HIGH 7.5 UPGRADE Improper validation of integrity check value in the AES-CCM implementation (CcmParameters and CcmBlockCipher)
- CVE-2026-16000 HIGH 7.5 UPGRADE Missing cryptographic step in the DSTU 7624 CCM mode implementation (KCcmBlockCipher) in Legion of the Bouncy
- CVE-2026-16001 HIGH 7.5 UPGRADE Exposure of the message authentication key through the encryption keystream in the stream mode of IesEngine (a
- CVE-2026-63566 HIGH 7.5 UPGRADE Memory allocation with excessive size value in the DTLS handshake reassembly (DtlsReliableHandshake, DtlsReass
- CVE-2026-63567 HIGH 7.5 UPGRADE Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc
- CVE-2026-63568 HIGH 7.5 UPGRADE Allocation of resources without limits or throttling in the CMP/CRMF password-based MAC verifier (PKMacBuilder
FAQ
How do I fix bc-csharp vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is bc-csharp being exploited right now?
None of the tracked bc-csharp CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which bc-csharp CVE should I patch first?
CVE-2026-63567 currently ranks highest (41/100): Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc.