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Low · 2.3 CVE-2025-9071 EUVD-2025-26195GHSA-5h27-5x9j-ffpx

Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto

Published Aug 29, 2025 · Updated Aug 29, 2025 · Assigned by NCSC.ch

Description

Erroneously using an all-zero seed for RSA-OEAP padding instead of the generated random bytes, in Oberon microsystems AG’s Oberon PSA Crypto library in all versions up to 1.5.1, results in deterministic RSA and thus in a loss of confidentiality for guessable messages, recognition of repeated messages, and loss of security proofs.

Affected products

VendorProductAffectedFixed
Oberon microsystems Oberon PSA Crypto 1.0.0 – ≤ 1.5.1 —

References