CVE-2026-12852highCWE-789

CVE-2026-12852: high-severity vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA

MLS wire decoder allocates attacker-declared opaque length before bounds check

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 0.5%
In Bouncy Castle for Java before 1.85, MLS wire decoder allocates attacker-declared opaque length before bounds check.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Amber
Affected products
Legion of the Bouncy Castle Inc. · BC-JAVA
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