SEPTEMBER 17, 2026
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Case File

CVE-2026-13506

HIGH · CVSS 7.5 EPSS 0.31% 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, contain a vulnerability where Lazy ASN.1 sequence forcing can reset the nesting-depth guard. This flaw may lead to potential denial-of-service conditions or other unexpected behavior due to improper handling of ASN.1 sequences. Organizations utilizing affected versions of Bouncy Castle 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-2026-13506
Severity
HIGH
CVSS
7.5
EPSS
0.31%
Java

Original NVD Description

In Bouncy Castle for Java before 1.85, Lazy ASN.1 sequence forcing resets nesting-depth guard. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).

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