CVE-2026-12852

High

Open

TLP:CLEAR

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

NVD CVE.org

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In Bouncy Castle for Java before 1.85, MLS wire decoder allocates attacker-declared opaque length before bounds check.

CVSS Score: 8.7
EPSS Score ⓘ: 0.26%

18.1th percentile
CVSS Vector: 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
Confidence: 90%
Published: Aug 3, 2026
Last Modified: Aug 3, 2026

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