SEPTEMBER 20, 2026
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Case File

CVE-2026-12802

HIGH · CVSS 8.7 EPSS 0.17% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-03 · Last synced 2026-09-02

CyberRota Analysis

AI-Generated

Bouncy Castle for Java versions prior to 1.85, as well as specific LTS and FIPS versions, are vulnerable due to a failure in the CMS AuthEnvelopedData implementation to enforce tag-length during decryption. This oversight could potentially allow attackers to exploit the decryption process, leading to unauthorized data access or manipulation. Organizations utilizing affected versions of Bouncy Castle in their Java applications should prioritize updating to mitigate potential security risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-12802
Severity
HIGH
CVSS
8.7
EPSS
0.17%
Java

Original NVD Description

In Bouncy Castle for Java before 1.85, CMS AuthEnvelopedData fails to enforce tag-length on decryption. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).