CVE-2025-7383 Details
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.
A padding oracle attack vulnerability has been identified in Oberon microsystem AG's Oberon PSA Crypto library, affecting all versions from 1.0.0 prior to 1.5.1. This vulnerability allows an attacker to recover plaintext by exploiting timing differences in AES-CBC decryption operations that use PKCS#7 padding.
Users of the Oberon PSA Crypto library should upgrade to version 1.5.1, where the timing side-channel vulnerability has been addressed. However, a full mitigation requires clients to validate the integrity of decrypted messages in a constant-time manner, tailored to their specific applications.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 29, 2025CISA-ADP
Assessed Aug 29, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.oberon.ch/security-advisories/cve-2025-7383/ | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-208 | Observable Timing Discrepancy | [email protected] |
| CWE-327 | Use of a Broken or Risky Cryptographic Algorithm | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Oberon PSA Crypto | All versions |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Aug 29, 2025 | New CVE Received | [email protected] |