CVE-2025-9071 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00023.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

Fri, 29 Aug 2025 14:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 29 Aug 2025 09:30:00 +0000

Type	Values Removed	Values Added
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.
Title		Insecure RSA-OAEP implementation with all-zero seed for padding in Oberon PSA Crypto
Weaknesses		CWE-780
References		https://www.oberon.ch/security-advisories/cve-2025-9071/
Metrics		cvssV4_0 `{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/RE:L'}`

MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published: 2025-08-29T09:19:59.959Z

Updated: 2025-08-29T13:45:42.363Z

Reserved: 2025-08-15T14:58:36.635Z

Link: CVE-2025-9071

Vulnrichment

Updated: 2025-08-29T13:45:33.657Z

NVD

Status : Awaiting Analysis

Published: 2025-08-29T10:15:33.020

Modified: 2025-08-29T16:24:29.730

Link: CVE-2025-9071

Redhat

No data.

OpenCVE Enrichment

No data.

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