CVE-2026-13506 HIGH

CVE-2026-13506: Lazy ASN.1 sequence forcing resets nesting-depth guard

Vendor Legion Of The Bouncy Castle Inc.
Product BC-JAVA
Weakness CWE-674
Published August 3, 2026
Last update August 3, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

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

What the vulnerability does

01Description

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).

Key dates

02Disclosure timeline

August 3, 2026 CVE published
August 3, 2026 Record updated