CVE-2021-42023
MEDIUMSiemens ModelSim and Questa Simulation - Insufficiently Protected Credentials in RSA White-Box Implementation
Title source: llmDescription
A vulnerability has been identified in ModelSim Simulation (All versions), Questa Simulation (All versions). The RSA white-box implementation in affected applications insufficiently protects the built-in private keys that are required to decrypt electronic intellectual property (IP) data in accordance with the IEEE 1735 recommended practice. This could allow a sophisticated attacker to discover the keys, bypassing the protection intended by the IEEE 1735 recommended practice.
References (1)
Core 1
Core References
Patch, Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-400332.pdf
Scores
CVSS v3
6.5
EPSS
0.0014
EPSS Percentile
33.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-522
Status
published
Products (2)
siemens/modelsim
siemens/questa
Published
Dec 14, 2021
Tracked Since
Feb 18, 2026