SB20260414107 - Denial of service in Opencryptoki

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260414107

SB20260414107 - Denial of service in Opencryptoki

Published: April 14, 2026

Security Bulletin ID SB20260414107
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-40253)

The vulnerability allows a remote attacker to disclose sensitive information and cause a denial of service.

The vulnerability exists due to out-of-bounds read in BER/DER decoding functions in usr/lib/common/asn1.c when parsing malformed BER-encoded cryptographic objects with attacker-controlled length fields. A remote attacker can supply a specially crafted key or certificate to disclose sensitive information and cause a denial of service.

The issue affects the shared common library and impacts all token backends, including Soft, ICA, CCA, TPM, EP11, and ICSF.


Remediation

Install update from vendor's website.

References