CVE-2025-7383 - Vulnerability Details - OpenCVE

Padding oracle attack vulnerability in Oberon microsystem AG’s Oberon PSA Crypto library in all versions since 1.0.0 and prior to 1.5.1 allows an attacker to recover plaintexts via timing measurements of AES-CBC PKCS#7 decrypt operations.

Attack Vector Local

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

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 0.00008.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

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Fixes

Solution

Affected users should upgrade to Oberon PSA Crypto 1.5.1 or later.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://www.oberon.ch/security-advisories/cve-2025-7383/

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		Padding oracle attack vulnerability in Oberon microsystem AG’s Oberon PSA Crypto library in all versions since 1.0.0 and prior to 1.5.1 allows an attacker to recover plaintexts via timing measurements of AES-CBC PKCS#7 decrypt operations.
Title		Timing side-channel vulnerability in AES-CBC decryption with PKCS#7 padding in Oberon PSA Crypto library
Weaknesses		CWE-208 CWE-327
References		https://www.oberon.ch/security-advisories/cve-2025-7383/
Metrics		cvssV4_0 `{'score': 5.9, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published: 2025-08-29T09:19:01.638Z

Updated: 2025-08-29T13:46:14.471Z

Reserved: 2025-07-09T09:43:45.575Z

Link: CVE-2025-7383

Vulnrichment

Updated: 2025-08-29T13:46:09.230Z

NVD

Status : Awaiting Analysis

Published: 2025-08-29T10:15:32.873

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

Link: CVE-2025-7383

Redhat

No data.

OpenCVE Enrichment

No data.

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