CVE-2025-9071

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

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.

Category

2.3
CVSS
Severity: Low
CVSS 4.0 •
EPSS 0.03%
Affected: Oberon microsystems AG Oberon PSA Crypto
Published at:
Updated at:

References

Link Tags
https://www.oberon.ch/security-advisories/cve-2025-9071/

Frequently Asked Questions

What is the severity of CVE-2025-9071?
CVE-2025-9071 has been scored as a low severity vulnerability.
How to fix CVE-2025-9071?
To fix CVE-2025-9071, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-9071 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-9071 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-9071?
CVE-2025-9071 affects Oberon microsystems AG Oberon PSA Crypto.
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