SB2025112755 - Use of insufficiently random values in Ribose RNP

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Main Vulnerability Database SB2025112755

SB2025112755 - Use of insufficiently random values in Ribose RNP

Published: November 27, 2025

Security Bulletin ID SB2025112755
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use of insufficiently random values (CVE-ID: CVE-2025-13470)

CWE-ID: CWE-330 - Use of Insufficiently Random Values

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to the symmetric session key used for Public-Key Encrypted Session Key (PKESK) packets is left uninitialized except for zeroing, resulting in it always being an all-zero byte array. As a result any data encrypted using public-key encryption in this release can be decrypted trivially by supplying an all-zero session key, fully compromising confidentiality.


Remediation

Install update from vendor's website.

References