CVE-2026-12803
In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD forgery). This issue also affects Bouncy Castle for Java LTS before 2.73.12.
- Published Aug 3, 2026
- CVSS 8.7 high
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Affected software
In the news
- Multiple vulnerabilities in IBM products CERT-FR ·
- Multiple vulnerabilities in IBM products CERT-FR ·