CVE-2024-56141 Bixilon CVE debrief

Who should care

Users of Minosoft, an open-source, multi-version Minecraft Java Edition client written in Kotlin, should be aware of this vulnerability. The vulnerability affects all versions supporting Minecraft protocol 1.7 and later, and no patched version is available. Operators, platform administrators, and security teams should review the vulnerability's impact on their systems and consider implementing compensating controls.

Technical summary

The CryptManager encryption routine (CryptManager.kt) initializes its AES cipher using an initialization vector (IV) that is set equal to the secret key rather than to a sufficiently random value. Because the IV is not random and is derived directly from the key, the encryption is vulnerable to chosen-ciphertext/chosen-plaintext attacks: an attacker who can submit specific messages for encryption can recover the secret key. This vulnerability affects all versions supporting Minecraft protocol 1.7 and later.

Defensive priority

Medium priority

Recommended defensive actions

• Review and update Minosoft to use a random initialization vector (IV) for the AES cipher.
• Implement additional monitoring and logging to detect potential attacks.
• Consider using alternative encryption methods that are not vulnerable to chosen-ciphertext/chosen-plaintext attacks.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The vulnerability was reported by an unknown source. The CVE record was published on 2026-07-07T00:16:33.607Z and last modified on 2026-07-07T14:00:32.080Z. The NVD entry is currently Deferred. Evidence is limited, and defenders should verify the vulnerability's existence and scope. Additional review is required to confirm affected systems and assess potential impact.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.