# Legion of the Bouncy Castle Inc. Bc-Csharp vulnerabilities

Source: https://junglewise.ai/threats/technologies/bc-csharp  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/bc-csharp.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Legion of the Bouncy Castle Inc. Bc-Csharp: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-103604, was published on 2 October 2026. Nothing in the last four weeks, down from 3 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 3
- All time: 3 (0 critical, 0 exploited in the wild)

## About Legion of the Bouncy Castle Inc. Bc-Csharp

C# implementation of the Bouncy Castle cryptography library.

## Latest Legion of the Bouncy Castle Inc. Bc-Csharp vulnerabilities

- [CVE-2026-103604: Bouncy Castle inefficient X.509 distinguished name parsing](https://junglewise.ai/threats/cve-2026-103604-inefficient-algorithmic-complexity-in-x-509-distinguished-name) (info, published 2 Oct 2026)
- [CVE-2026-16001: Bouncy Castle bc-csharp IesEngine MAC key exposure in stream mode](https://junglewise.ai/threats/cve-2026-16001-exposure-of-the-message-authentication-key-through-the-encryption) (info, published 2 Oct 2026)
- [CVE-2026-16000: Bouncy Castle DSTU 7624 CCM authentication bypass with missing nonce binding](https://junglewise.ai/threats/cve-2026-16000-missing-cryptographic-step-in-the-dstu-7624-ccm-mode) (info, published 2 Oct 2026)

## Most severe Legion of the Bouncy Castle Inc. Bc-Csharp vulnerabilities

- [CVE-2026-103604: Bouncy Castle inefficient X.509 distinguished name parsing](https://junglewise.ai/threats/cve-2026-103604-inefficient-algorithmic-complexity-in-x-509-distinguished-name) (info, published 2 Oct 2026)
- [CVE-2026-16000: Bouncy Castle DSTU 7624 CCM authentication bypass with missing nonce binding](https://junglewise.ai/threats/cve-2026-16000-missing-cryptographic-step-in-the-dstu-7624-ccm-mode) (info, published 2 Oct 2026)
- [CVE-2026-16001: Bouncy Castle bc-csharp IesEngine MAC key exposure in stream mode](https://junglewise.ai/threats/cve-2026-16001-exposure-of-the-message-authentication-key-through-the-encryption) (info, published 2 Oct 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 3 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 3 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Legion of the Bouncy Castle Inc. technologies

- [Legion of the Bouncy Castle Inc. BouncyCastle.Cryptography](https://junglewise.ai/threats/technologies/legion-of-the-bouncy-castle-inc-bouncycastle-cryptography): 6 vulnerabilities
- [Legion of the Bouncy Castle Inc. Bouncy Castle Java Cryptography APIs](https://junglewise.ai/threats/technologies/bc-java): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Legion of the Bouncy Castle Inc. Bc-Csharp vulnerabilities", https://junglewise.ai/threats/technologies/bc-csharp, 9 November 2026.